Top of the list is food, you need to come to some form of balance with it and I would suggest making your own as much as possible.
The gym is good, if you find it boring - do classes, they will push you much further than you would have gone by yourself.
Get a sport, football, tennis, swimming, running, karate - whatever, you need something that focuses your mind. My sports are surfing and kitesurfing but don't get anywhere near enough time to do them.
Last is something that I highly recommend is self hypnosis - this is when you listen to audio tracks which focus on whatever you want to work on - confidence, relaxation, productivity, weight loss etc... It might sound silly but our sub-conscience/un-conscience plays a massive roll in our lives and most people never engage it. It's powerful stuff and would recommend you have a look online.