How do I feel full without eating too much. (my story included)?

I weigh around 195lbs and I'm about 6 ft. I run at least 3 miles a day after school during practice. Play tennis and sometimes hit the gym on the weekends. I'm finding it real difficult to lose any weight during this process. I've managed to stabilize my weight at 195ish, but once tennis season ends I fear I might start putting on pounds again. The only time I actually lost a bit of weight was during the summer when I vacationed in the Philippines where it's upper 90s and humid everyday. I boxed at their gyms (which have no air conditioning) for 2 hours a day for about a month. I lost about 20 lbs. Now I'm back in Indiana, and there's no boxing gyms, and the cold weather doesn't help with workouts. I spend a good 2-4 hours a day working out and I still don't lose any weight. I've concluded that if I'm able to find a method to feel fuller without eating as much I will be able to cut down some fat. My dieting skills aren't that great, I love to eat and try to exercise to make up for it. I just can't put anymore time to work out in my schedule. If someone can come up with a good working plan, I'd be glad to give them 10 points. Thanks a bunch =D