Its okay to feel sorry for yourself sometimes. The trick is to use to motivate yourself and not to go down the, 'i cant do it,its too hard , I don't deserve this' spiral. Make your life the best you can - that's actually what you deserve.
Put the cinnamon buns behind you with the other mistakes and make a fresh plan. Start over with something that's achievable and enjoyable. Ultimately we are all accountable for ourselves so use your experience to help yourself now.