Personally, I have not found it to work for me. If I try to do the hobbies I used to do and force myself, they never come out right. Or I just flat mess them up.

At work, I have to force my self to be happy and in a good mood since I am at the front desk. It, however, does not change the way I feel on the inside or make me happier when I leave work. Maybe for some it works but not for me.