I have a medium sized lump on the posterior aspect of my right wrist, almost in line with my index finger, it's neither soft, nor hard just somewhere in between. It has been there for about 3 years but never caused any problems before but now sometimes it's painful to lift heavier objects. It usually grows then goes away for a while just to come back even larger. I read that it could be a ganglion cyst and that you can make it go away by smashing it with a book, it worked for the first time but now doesn't. I don't really have time to go to the doctor with it(university+work) so i would like to ask you, do i have to worry about it?