Next step, turn your resolution into an attainable goal. Jumping into a gym or program is hard, and staying consistent with a gym or program is every harder. But once you’ve established a routine, it’ll keep you consistent. Ease your way in by setting up gradual commitments such as doing 2 sets of 10 reps of Bicep work outs Monday Wednesday and Friday. Adding in Cardio for 20 minutes Tuesday and Thursday should follow. Having a plan is definitely a must, it’ll provide organized options that do not feel obligated.
Your eating habits are important as well. Counting your calories (not to be confused with dieting) has proven very effective. You can eat what you want, just make sure it’s within your caloric budget. This is a wonderful website to measure your caloric requirements if you are attempting to increase weight or loose weight.
http://www.freedieting.com/tools/calorie_calculator.htm I went from 230 to 190 in 3 months, eating was 80% of the battle, where developing a consistent workout routine that didn’t feel like I was killing my self became 20% of the remaining battle. P90x is a wonderful program, it’s like the boot camp program I do every Saturday at 24hr fitness, just make sure you pace yourself, remember, body recovery is just as essential as anything else. So just make sure you don’t do the full P90x every single day. I hope this helps, if you want more details, just let me know.