Making a firm resolution to work on your health is significant if you want to obtain good results. But the next step is to arrange a plan that will most benefit you.
Make sure you add some plyometric coaching to your routine where you work on giving yourself a strong leap which might help you to get high enough for the dunk.
When you have worked on this for a while you should notice a substantial improvement in your leaping ability.
You will still need to comply with other training routines too and make sure that you have a balanced diet.
I hope you got some tips from this text and are impressed to work in the direction of your goal. More at how to dunk.