I don't want to be the first to break it to you, but I wouldn't be a great blogger friend if I didn't.
Most of the time when you claim you are giving 100%, you probably are not. Myself included! Think about it. If you are working towards a goal, and are not seeing the results that you would like, ask yourself, "Am I giving all that I can possibly give to make my goal happen?" Let's look at this in terms of getting fit and/or losing weight.
Do you have a set nutrition plan?
Do you prep your food so you don't "fall" into situations that leave you scrambling?
Did you cave into that cake at the office party that really wasn't that great, BUT you ate it anyways?
Did you make a gym schedule?
Do you stick to your gym schedule?
Did you push yourself for that extra 10/15 minutes on the elliptical machine?
Do you continuously up the number of reps you do or the weights when it gets too easy?
Do you mix up your workouts so your body doesn't get bored?
Do you track your weight and measurements so you can track all progress?
Do you give your body ample time to rest after intense workouts?
and the questions could go on and on.....
It is hard to give 100% all of the time, so don't be overly hard on yourself. But those times when you say you are giving 100%... really make sure you are and amp it up another 10% just to make sure.