People who carry extra weight have more aches and pains. It hasn't worked before. Today is the first day of the rest of your life. You are making changes to glorify God. Perhaps you've learned to play a musical instrument or raised children.
Success requires discipline and a long-term commitment.
I'll have to give up my friends. Share the changes you are making with your friends. They will be more understanding and supportive than you may think. Don't withdraw from people. All my family is overweight.