I just realized I will probably be a millionaire in 5 yrs. Should I retire then?

Was just running the numbers and uming my 401k mutual funds keep at or near their current pace they'll reach a mill in about 5 years. I would be 55 so I think I'll plan to take early retirement where I work. I'll have 25 years so my pension will be decent. I think I'll get about 3k per month if i get out at 55. That and a mill in the mutual funds should do me oky, hu? Of cousre soc sec kicks in at 65...sound cool?