Winning then losing always feels worse

I got off to a great start last night and within 40 mins. was up $400 and then the shit hit the fan. I got my money in with the best hand several times and lost to the river. The LORD giveth and the LORD taketh away. I ended the night up $55...WOO! Still it is always a good thing to end the night with a profit. I think my game is very solid right now and barring river suckouts I believe I will make some good money. Having said it, lets now see it happen.