So here's my advice. Forget that ubiquitous slogan "Just do it" and "Just Do Something."
I kind of equate this to me and my crafting. I'm constantly envisioning crafty ideas in my head. I mean CONSTANTLY. I can't possibly do them all right now. Maybe even ever. But I can pick one.
Bear with me here. A fitness goal is kind of like a crafty endeavor. What we envision in our heads and what we actually produce in our first attempts are often less than spectacular. But with practice and repeated attempts, we see results. We learn from our mistakes. We come up with solutions. And over time we become really good! So good, that we are inspired to modify our current action or try another activity all together.
So when you can't decide what to do first, just pick one idea and run--or walk-- with it. If you want to lose some weight, instead of changing several habits all at once, develop one new habit at a time. Maybe you start eating a healthy breakfast everyday. Or you start biking to work. Or you stop eating while watching TV. Or you sign up for a pilates class. If you attempt them all, all at once, you and I both know you're probably going to throw in the towel before the end of the day. . .Come on! Did you really think a developing a new habit was going to be that easy?!
Think of your health goal like a crafting a new body. Figure out what really interests you. Find our what tools you need and how to use them properly. Find others with similar interests. Have some fun. Practice regularly.