Do about 30 or 40 turns as suggested above and keep it on the wrist for a while, does it still stop, and is it stopping in a specific area, such as seconds hand in same place? You may be just not getting enough power to the mainspring with 10 turns try a few more turns.
It may be an issue with the movement, could be a little dirt or lack of oil causing it to halt. what kind of movement is in it?
Need a few more details, is the watch working normally while on the wrist? When you pick it up stopped, try putting it straight onto the wrist stopped, and leave it there for 10 mins while you do something else, then check it, has it started by itself after ten mins?