Politely walk away from the friends who don't support the changes in your life.
There will be friends who don't.They will be jealous and afraid every time you make a change.The will see your new motivation as a condemnation of their own lack of it. In subtle ways, they will bring you back down to who you used to be. Beware of friends and family who do this. They know not what they do.
The people you spend time with will change your life in one way or another. If you associate with cynics, they'll pull you down with them. If you associate with people who support you in being happy and successful, you will have a head start on being happy and successful.
Throughout the day we have many choices regarding who are going to be with and talk to. Don't just gravitate to the coffee machine and participate in the negative gossip because it's the only game in town. It will drain your energy and stifle your own optimism. We all know who lifts us up, and we all know who brings us down. It's okay to start being more careful about whom we give our time.
enthusiasm for life is contagious