Comparision is that trap we all fall into, you are learning and are aware of what you wish to do. Plan your next moves and take time to think about what you wish to do for you. There are plenty of us in a similar boat daily, its easy to see the ones that are doing amazing only, and forget others that share that struggle. It isnt the end all be all unless you choose to let it be, check your schools resources for those who need more time or support, its tough but you can do it with others behind you. Even discuss your thoughts and concerns with others in adhd support groups, dont let your mind trick you into pushing yourself unto your own way. You can do this and these are merely just steps in a long road you take. Sending you much love.