Exercise. Exactly how is not important. What matters is just being consistent. Eventually it becomes a habit that will grow with you.
If it's difficult or frustrating, you're probably trying too hard. Ease up next time. If it feels like a chore, you're not doing the right activity for you. It should be enjoyable.
great advice.. scale into exercise gradually and let the benefits build up and pull you along, rather than pushing yourself to do more.. find an activity that keeps drawing you back into it because the results feel good..
This was key for me. I spent way too much time working way too hard, like 9 out of 10 exertion. I dreaded just getting started. I've now found that I can make better gains working in the 5 to 7 range, and I look forward to my workouts.
On a sort of related note, I started writing down what I eat in one of those apps that also sums up nutritional information (Waistline on Android). It is quite useful to be more aware of how much you actually eat. Doesn't prevent you from eating unhealthy stuff sometimes of course but it prevents you from lying about it to yourself with selective memory.
Certainly! Just do something. Consistency matters. The nature of activity you choose is insignificant when you consider doing something, vs. doing nothing.