No matter how many times you have to start over, just start over again! Whether it is with your fitness plan, your diet, your spiritual practices, practicing yoga, an intention to read to your children each day, cleaning your desk off, or turning off the faucet when you brush your teeth, it is worth it to start your practice over again and again and again.
Life will always give us obstacles in pursuing our path, our practices, and our dreams. There are illnesses, hormonal fluctuations, scheduling difficulties, financial problems, relationship troubles, and times of indecision and confusion in everyone's life. And of course it takes courage to pick up the pieces and start again. We all know that breaking promises to ourselves can hurt the old self-esteem. So we may doubt and fret over starting again. Nevertheless, we must! The alternative could mean giving up.
Also, my teacher says that if you have pursued a discipline in the past, you still retain it's merit. For example, if you used to practice hatha yoga and now you have stopped, when you start again you can quickly get back to the level of body awareness and flexibility that you once had. You never lose the merit of your past discipline.
So, just do it! You know what you need to do. Follow your inner wisdom and start over again. May your return(s) to discipline and consistency bring you great happiness.