Still struggling

I'm still trying hard to get back on my diet .it has been. Struggle for me.. I keep trying I get on it and go about a week and then blow it . I got to get back on it  hardcore..  I need to get motivated and just stick to it. It was so much easier before my ex coach basically accused me of cheating some how . And it truly stressed me out to no end.. I am back at it again since Sunday and hopefully I will succeed this time to get back on my diet..