stock market rising

i could hear a sigh of relief from everyone (or maybe it was a shout of joy?) when the stock market went back up following a 0.5% drop in federal interest rates. so i don't know anything about finance but apparently that's a really large drop and pretty unprecedented. so now even my mutual funds are going back up...back into the green. i kept thinking about how i should have listened to my own advice, bought back in when it was in the slump, and waited for this upturn to bring me more money. but i can't drop the feeling that the government is bailing out rich people from what should have been a real correction of the markets, and now we've continued on a previously inflated sense of bullishness. so should i keep my money in? when i saw -10% returns i wished i had sold everything when i was at like +2%, but now i'm at +2% and now i think i should stay in until +10%. I don't know. at least it's my retirement account, and i won't be accessing this money for real for like 50 years, so maybe i don't have to worry about it.