I have prayed, many a time, for God to help me stay on a diet and exercise plan. Many a time, I felt he was ignoring my requests.
Then, one of the two auto-immune diseases in my body reared its ugly head... again... and again... and again. I found the best way to cope with the constant pain was 1. daily exercise and 2. staying on a restricted diet (I'll spare you the details).
God cracks me up. Sometimes it feels that He gives me the most difficult/ painful/ annoying answers to my prayers. BUT He always answers! Not in a way that I might choose for myself, but it a way that He knows is best.
So, here is my encouragement/ advice... ask God to be a part of your journey. He is by far the best accountability partner you will ever have!
"For I know the plans I have for you," declares the LORD, "plans to prosper you and not to harm you, plans to give you hope and a future." -- Jeremiah 29:11