Flying in the wind is a decision that you have to make. But that's when you really learn to fly. After you have soloed you should try and fly in the wind as often as possible. Yes it will be rough on your nerves and you trainer, but your flying skills should improve over time. Some of the guys stated that they fly in breezy conditions most of the time. Well I have flown models in many different parts of the country and can attest to the fact that in some areas you won't fly at all if you expect the wind to die down to a certian level.
As a beginer try to fly mostly when the wind is pretty much down the runway. And your skill and confidence builds you can be the judge of when you can and will fly.
Good luck and have fun !!! [&:]