Only been using PS for about 1.2 year. When I started I essentially had competition and my need to be better than others kicked in and pushed me to keep learning new things. The competition is no longer present and hasn't been for a very long time, I guess that just shows I really enjoy art in a whole.
I wouldn't consider myself a professional. I believe once you start calling yourself a professional you start to slack and think you don't need to learn new things or push yourself like you once did. I will always consider myself a student because I am forever learning.