Otherwise without drive one is just going through the motions. If you want to learn to behave in a different way then just start act as though you already have that behavior. Play the new role long enough and you will become that person. Don t articulate pessimism or hang around negative sarcastic people. It is difficult to maintain your positive perpsepctive if all you hear is negative crap.
Negative people tend to bring others down.
People will not want to be around you if you are always being negative and you should refuse to associate with people who do not support your good feelings. Do not accept put downs from other people. Be assertive and let them know that you do not appreciate negative criticism. What ever people say to you, you do not need to internalize the message or believe it. You have no control over what what other do or say only you own beliefs.