|Optical mouse or old fashioned ball under mouse? |
If ball mouse, remove ball and clean all three rollers from build up, either by scraping with fingernail or rubbing alcohol on Q-Tips, reassemble.
A mouse, especially an optical mouse should not move significantly if lifted, I have found myself at the edge of the mouse pad and lifted and centered without jumping. It may be time for a new mouse.
You have to be a little bit crazy to keep you from going insane.