Do I have the strength to do this?

So, I'm about to take three weeks off work with the intention of turning my life around. Three weeks isn't long to try and lessen problems that have hung around for years, but it's all the time I have.

I must admit that this whole thing frightens me, although I do my best not to show it. I plan to schedule my days as strictly as possible in the hope that it'll stop me from dithering and losing what little momentum and enthusiasm I have. It will be hard, it will leave me exhausted, it will cause stress in the short term, but I hope it's for long term benefit.

My one fear is that I won't be able to stick to this, that my anxiety and depression will get the better of me and all my well laid plans will just fall apart. I want this to work, but then I've wanted to make changes like this for a long time and not much has happened. I am getting more support this time than I ever have before, but will that be enough if I can't keep myself from faltering?

I don't know if I can make this happen, but I do intend to try. I just hope that the little strength I have is enough to see this through.