I agree about building up to it rather than trying to do the hardest, most strenuous thing right at the outset. I didn't exercise either before this year. So, when I started, I was doing several 10-15 minute spurts a day because that was all I could handle. And I did indoor walking, mixed in a little jogging, dancing, the bicycle exercise where you're lying on the floor, used my Total Body Trainer, etc. Basically, I kept my body moving and my heart pumping for those 10 minutes, and I did it to music because it made it more fun for me. And then several things happened:
I started being able to go longer than 10 minutes at a time.
I enjoyed the exercising I was doing and missed not doing it when I was too tired or not feeling well.
I found that the music spurred me on to continue longer than I might have without music.
It made me feel pretty good...physically, emotionally and mentally.
I think some of the tricks to it are:
to not try to take on more than you can handle too soon
to be happy and proud of what you do actually do (even if it is 10 minutes, that's 10 minutes more than before!)
to not look at exercise as just a regimented routine or 30-60-minute block of time but to see ways to exercise out of that framework (i.e., take longer walks, put on a cd and dance, get up from the couch when the commercials come on, etc.) Seize the moments!
to find ways to make it fun for yourself....like I said, playing music that I like really encourages me to move