More Shivchay Haran on Shmiras Habris

Start Again from the Begining 
Rebbe Nachman was accustomed to start each time from the beginning. When he would occasionally fall from his spiritual level, he would not despair from this. Instead he would tell himself that he would restart from the beginning as if he had never started entering the service of Hashem, as if only now he was first starting. So too each and every time, his custom was to start from scratch. He would have a few starts in one day, sometimes even in a single day he would fall from his spiritual service and he would start from the beginning, even few times in a single day.
(Shivchay Haran - His Greatness 6)

Plead and Beseech With Prayers 
The main spiritual techniques through which Rebbe Nachman merited to what he merited was only through excessive prayers, petitions, pleadings, appeasements and requests that he was very accustomed to pray and plead in front of Hashem. He would appease and petition Hashem with numerous types of pleadings and requests that Hashem would merit him in His great mercy and bring him close to His service. The main thing that helped Rebbe Nachman were the prayers that he prayed in Yiddish. He was very accustomed to set aside for himself a place where no people were to be found and he he would converse with Hashem in his native language, Yiddish. He would appease and petition Hashem and would request and plead before Hashem with numerous arguments and reasonings how it was befitting to Hashem to bring him close to His service. Rebbe Nachman was very, very accustomed to doing this and spent months and years doing so.
(Shivchay Haran - His Greatness 10)

Main Thing is Hisbodedute
Aside from the many formalized prayers that Rebbe Nachman used to pray, the main thing were the prayers that he used to pray from himself. Meaning, his custom to speak from his heart in front of Hashem in Yiddish, where he would pray and argue in front of Hashem with many, many arguments, pleadings and requests, that he composed with his own mind and heart, as mentioned above that Hashem should merit his to His service. This was the main technique that helped Rebbe Nachman to reach the level that he reached. This we heard explicitly from his holy mouth.
(Shivchay Haran - His Greatness 10)

See full project 

Tzadik Yesod Olam - Rebbe Nachman of Breslov on Shmiras Habris

Shivchay Haran on Shmiras Habris

Rebbe Nachman's Practices Can Bring All Close to Hashem 
These practices [brought down in the books of Rebbe Nachman] are holy and precious practices that each and every person can use to come close to Hashem through these practices, as they are customs that are equivalent to all whether a person is big or small. Even the lowest Jew if he wishes to to have mercy on his life and to think about the everlasting purpose and then accustoms himself to go in these channels and paths that are mentioned here [in the books of Rebbe Nachman], will for sure merit the 'Next World' and will be able to reach very high and holy levels like those of high spiritual rank, if he is strong in his mind to hold onto his good path consistently, like a strong peg so he does not fall.
(Shivchay Haran Intro)

Sometimes Better to Hide Spiritual Levels 
Even though Rebbe Nachman was already holding on high spiritual levels, during his youth he would outwardly perform many childish actions.
(Shivchay Haran - His Greatness 2)

Serve Hashem Secretly
As he grew older Rebbe Nachman started entering the Service of Hashem. Yet all his spiritual worship was very very concealed, so much that not a single person knew about him at all since he was very hidden and concealed. All of his spiritual service was done very hiddenly and secretly.
(Shivchay Haran - His Greatness 5)

Serve Hashem With Simplicity
In the beginning the bulk of his spiritual service was with great simplicity and without any wisdom at all, just in complete simplicity.
(Shivchay Haran - His Greatness 5)

Serve Hashem With Great Effort and Strength 
Each and every thing he accomplished was with great effort, major dedication and self sacrifice. There was not a single spiritual practice that came to him easily. Rather each and every spiritual practice came to him only though tremendous effort, where he would strain himself time after time for each and every element of his spiritual service. He had countless ups and downs, thousands and tens of thousands, without count or number.

It was very hard and heavy upon Rebbe Nachman to begin entering the the Service of Hashem and to accept His yoke upon him. Often he would start for a few days, dedicating himself to the Service of Hashem and then he would fall from that. He would then get up and start again and then he would fall again. This repeated itself many times until one time he strengthened himself that he will remain strong in the Service of Hashem forever and he will not pay attention to anything that happens. From then and on his heart became strong in Hashem. Although even afterwards he constantly still had many - many ups and downs, yet from that point on he was strong that he would never stop his Service of Hashem, even though occasionally he has a descent, even then he will strengthen himself in his Service of Hashem to do whatever he could.
(Shivchay Haran - His Greatness 5)

See full project 

Tzadik Yesod Olam - Rebbe Nachman of Breslov on Shmiras Habris