If these are things that you think need to be worked on then absolutely work on them for your own sense of well being. If it's just to get him back then there's too much potential to backslide and a huge disappointment if he decides that it doesn't matter that you've changed.
Also, didn't he say before that there were other issues that he hasn't told you? Don't be discouraged if these are things you really want to change about your life, but remember he hasn't put all of his cards on the table. The next requests may or may not be reasonable.
Mental health and a clean house are both good things, but be sure to cut yourself some slack. I'm a neat freak and there are days when my bed doesn't get made to my satisfaction. I really admire people who work out every day, but I'll never be one of them. I try to be a pleasant person, but some days evil-z does all of the talking. We all have weaknesses. None of us lives up to our best expectations of ourselves and it's okay so long as we own our mistakes and keep trying to do our best.
BTW, a few years ago a lot of DBers were into Flylady.net. It's a website about cleaning and organizing that's pretty good.
