Stop the negative thoughts. Don't ever call yourself weak, helpless or doomed. All of us have the power to determine our futures. Our bodies ARE already changing every single day. But in what direction? that's up to you. You're habits are harder to change than anything else. What are you doing consistently? Are you getting the results you desire? If not, think about changing your program, a change in program results in a change in the body. But most importantly, change your mindset. Use every single day as an opportunity to better yourself. Some days you may indulge, but be conscious of the consequence of that. Nobody is perfect and our souls must be fed just as our living bodies need their fuel. A life without delicious treats is a sad and restricted one. Don't go all drill sergeant on yourself and ban treats forever, but learn to love healthy food and consider it an indulgence as it feeds and fuels the body you desire.