Answer
Learning to fight your emotions and desires is a natural part of growing up. What are they, and which are the most bothersome that need instant improvement in your self-control?
Write down a list of the wishes you would like to fight and rank them from the least distressing to the most distressing.
Select those who rank at the end and put them aside, as you can probably manage them easier. And choose those 4-5 that you are really worried about and that make you the most difficult to deal with.
Look at them one by one and make a plan for how you can gain control over them.
Watch the video for examples and more tips on fighting your nafs.
***
Disclaimer: The conceptualization and recommendations stated in this response are very general and purely based on the limited information provided in the question. In no event shall AboutIslam, its counselors or employees be held liable for any damages that may arise from your decision in the use of our services.