Change my life style
The best is to take a white page and write down the options which come to your mind. The easiest way to start changing your life style is by taking small affordable steps.
Any step you take should be oriented towards gaining more fun, freedom and excitement from life. Why? because unless you are excited about the changes you make, they won't stay for long.
Don't take hard steps that limit your spontaneity and freedom. If you focus on discipline, you are looking at short term success. If you want long term success, the best is to follow your instincts, inspiration and excitement.
Allow space for creativity. Don't rigidify frames or habits. Focus on increasing personal freedom instead.