I was driving in the snow in my 1995 astro van and I was sliding all over and I slid out and to the side and my power steering gave out now its hard to turn the when and the brakes take a lot to use

Hard enough to drive in snow with a properly operating vehicle. Do you have someone you can call to come pick you up?

Yeah I just found someone. But I parked my car and I literally had to use all my strength to turn the wheel. Have any ideas?

Might get lucky and just got some snow packed in the wheel well. Might have also just knocked the power steering belt off.

Hopefully you didn't bend a steering component or something in the suspension. But dandy has a point, maybe even snow packed in the brake calipers along with wheel-wells. Steering and brakes, to state the obvious-- are life-and-death issues and you really should have a mechanic have a look