It's important to take a day for yourself every once in a while. After all this is a lifestyle change so it is good to make habits that are sustainable for the long run. Glad to have you here and good luck to you!

I think the key is not over extending yourself. There are a lot of activities that look interesting and I wish I could do them all, but I can't. Trying to over extend not only puts more stress on your body, it can also put more stress on relationships!! Most people have to juggle a job, a family (spouse, kids, parents, in-laws), all the responsibility of living on your own (cooking, cleaning, laundry, maybe yard work, fixing up the house, etc), other things (church, community, sports leagues, etc) and sleep. Spin all this down and you may only have an hour or two a day for self improvement or relaxation. You then decide to focus on an activity that takes 30 to 40 minutes a day (I do C25K right now) and the time for other things get crunched. Deciding to take on something more may just be too much... but you cannot see the forest for the trees.

For me, focusing on one activity with a goal works. I get done with one cycle and then I transition into another cycle. Maybe that is C25K and then switching to a gym for Crossfit or working out with a DVD at home. When I finish that cycle, maybe C210K or lifting. I get to mark something off my fitness "to do" list and not worry about juggling multiple fitness cycles with all the other things make life, life.

You need to find something you love to start with and are motivated to achieve. If you don't have that you have nothing.