Need some help with losing weight

I'm a 5'5" girl and weigh between 125-128 lbs. I really want to lose some fat on my inner thighs, muffin tops, lower stomach, and a little bit off my sides. I don't think that I'm super fat I just would like to have a fit and in shape body. What are some other exercises I can do, how many times a week should I work out, and how should I keep myself motivated? I have a problem with laziness and after the first few times of working out I just stop because I get too lazy.