There is still chance that you don't need wear glasses in your future as long as you can protect your eyes very well. Limit the time of watching TV or playing computer. Don't read in the dark and take exercise regularly.
It is not late that you can realize that you should maintain a good vision. You can try eye exercise. But they do not produce instant results, it takes time, just like regular exercise. The two main exercises I use are called palming and shifting, just google them. I have kept doing them for a year and my vision does improve a little.
If you don't want to wear glasses, you can wear contact lenses. You should go to have an eye exam to see whether you need glasses or contact lenses to help you see clearly. If you do need them and you don't want to wear glasses, you can choose to wear contacts.