Kind of nervous writing something on this subreddit. I apologize in advance for some bad English. 
So I always had this problem with school that I can’t get myself to work and when the deadline comes closer I get mayor anxiety and heart palpitations. Despite this I still delay most of my schoolwork, but this has definitely gotten worse over the years. When I can I literally delay it till the last minute. But recently I get stress and heart palpitations in some other situations. I don’t really know what it is and don’t know what to do with it. And is delaying my work just an age thing (21) or is it something I can fix (many teachers etc have tried in the past)