People usally think losing weight is about half diet andhalf excercise,but both of those combined are only about 25% of it,Another 25% is good quality sleep,and the other--500 percent-is actually doing what yousaid you would.Luckily, if you start a diet right now, there is a way,an easy way, to make it almost impossible to fail.

Yes, sleep is very important and also you must be stress-free. Stress also sometimes leads to weight gain. For me sleep and diet is not the problem, the problem is the workout and exercises.