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