Chess Clocks

During a tournament it's essential that you manage your time, aswell as your game itself.  I find it hard and distracting to watch my clock and make sure that I stay in the timeframe!  When I start thinking, time fly!!   If anybody have advice to get use to this, please help!  I've played in a lot of tournaments, but exp didn't help.

I mark my scoresheet before I start the game.  If I am playing 40 moves in 2 hours, then I should be at move 20 in 1 hour.  I should be at move 30 in 1.5 hours.  If I get ahead in time in the opening, I can use it later in more complicated, critical positions.  If I am losing, who cares about time.  I will spend more time than necessary and blitz my way out if I find any winning ideas.  I once thought I was lost an spent 30 minutes and about to lose on time when I found a winning line.  I played it and all the moves and was able to win it, but did not find the winning move until a lot of time was used up.  If I am winning, no excuse to lose on time.  Have to make quick moves, so long as they are not losing moves, even if I have to repeat the position to gain some time.

Thanx I'll try that next time