I need to stop being so lazy.

I realize that I need to stop being so lazy.  I admit that I have not exercised in the past few days.  I may have to change my plans.  I would exercise only a few days of the week or exercise on the weekends for a period of time.  I need help with application of the dietary and exercise rules that are required to lose weight.  Maybe that is the problem.  Diet, or rather, healthy eating and exercise have been harder for me than I thought.  Because of this, I have all but given up.  I feel like I have tried but failed.  I feel like that I am a failure and that I will never lose this excess weight.  I don't wish to feel sorry for myself.  All I can do is to keep on going.