I got on a bicycle for the first time since I was 12 at 50 years old. I weighed 360 lbs. and couldn't ride it out of sight before I had to get off and walk. I got my diet right and cycled EVERY day. Actually 360 days that first year. Sometimes it was only for 10-15 minuets, but I did a few miles every day and was averaging a bit over 100 miles a week by the end of that first year. In less than 18 months I went from 360 lbs. to a very fit 170 lbs.

Nothing worthwhile is easy but you can do it.