Thanks for all the positive responses!

As I said, i'm taking this week of to re-think my poker strategies so we'll see how things pan out when I start playing again.

Thanks again for the responses everyone 

Sorry if you've heard a thousand stories like this but I need advice so i'll try to keep it as brief as possible.

I've been playing poker for just under 2 years.  I keep comprehensive records of every game I play.  My problem is those records look like crap and have far too many minus figures in them.

Now, I personally think i'm ok at poker.  Nothing great but I know how to play the game to a reasonable standard.  When I first started playing I learned the starting hands and started off as a really tight player (as most probably do).  After studying the game theory a little more in depth, I realised the reason I wasn't winning much money was because I was playing TOO tight so I loosened my play up a bit and I started to play much better poker.  Now I have a loose-aggressive style but i'm still losing money.  I play at really low limits so it's not having a negative effect on my life or anything but i'd obviously rather make money than lose it.  I'm now having a real crisis in my ability to play the game and i'm considering stopping playing completely because i'm fed up of being a donor to other people's bankroll.  I play mostly online and I play a mixture of sit n go's, multi-table tournaments and lo-limit cash games.

I've taken this week off playing completely to re-evaluate how I play and I plan to return to the tables next Monday a completely different player.
A winning one!

Does anyone have any advice as to how I can take my game forward and stop being a losing player??  Should I tighten up my starting hands again for a while to get my confidence back?

Any advice is greatly appreciated!