Some basic advice

When you are stuck, you sometimes want to play more hands or play higher stakes in order to recoup the ammount that you are down. If you find yourself in that state of mind then you should probably leave and come back later. You won't play your best game if your in that state of mind, the game won't go anywhere so take a break and come back in. You won't feel stuck anymore and will play better poker.
Take time after your poker sessions to analyse your mistakes and see how you could have played your hands differently. It's an essential key to being a better poker player.

Added on to what Sjaefen said, after someone loses money, they often feel like they have to make it back right away (before they leave that table). Take a break, relax, get your mind off poker and do something else for a while. There's so much time to play online that there's no reason to rush. The best way to bust out is to keep playing when you're on tilt.

Cudnt agree with this more, if only i could tear myself away more often

It also as the other reaction..i won 23.80 in a freoll tourney and went ot play o thetables right away. I got up to $110 and was soo happy. I should have just stop playing but no i was greedy and i lost a few big hands ad went down to $30. So once oyu are winning alot or losign alot just stop for a bit and then come back.

I agree,greed is most of our down falls.Ive been up in plenty of games and pushed on,just to fall flat on my face.other times i took abreak an did fairly well after coming back.good advice to just take a break.