1. The answer to "What do you do?" is "Whatever it takes".
2. What do you want to achieve? Figure out the gap between where you are now and achieving it. Figure out the first step, however small you can take that'll bring you closer. Take it.
3. Look after your body and your health. This may sound boring but this can make _such_ a massive difference to your life. Eat well and get fit. Do weights and cardio if you can. Your health, your confidence and your prospects in general will be greatly improved.
4. Drive hard towards your goals but live a balanced life. Enjoy your friends and your family and keep learning broadly throughout your life.
5. Old cliche but important - treat others as you would wish to be treated.