How to get back to practice after "falling" from it? How to get back to practice after failing ?   i  always try and fail try and fail 

meditating for some years- had and have a teacher - did retreats  -  but i never manage to keep meditating for more than a few days  - tried going all in - tried only meditating 5 minutes - or just being mindful ect ect 

cause every time i fail i take a month or two break if not more  

so how can i get back to practice each time ?   the more i "fail" and take this breaks i feel that its for no use cause i never manage to persevere no matter what i try
Ask your teacher. But my advice would be to just continue trying. Failing is not the problem here, it is the expectation of achieving some results which is the problem, because it causes suffering. Do as much meditation as you can without thinking about the past or future. Also sometimes being frustrated can be useful, because it shows you what kind of approach to meditation works and what doesn't.