I have found it isn't the mere presence of wind that is a problem. A fair amount of wind can make a trainer that is getting boring become a fun plane. The real problem is the gusts. When you least expect it they will jump out and bite you when you least expect it.

Taking off and flying aren't so bad in gusty conditions but landing can be a real bear. Definitely raises the pucker factor. I have come to the conclusion that if it is gusty and it is time to land, don't be afraid to abort a landing and come around for another try if a gust gets you spooked. Be patient and stay right on top of the plane as it can do funny things unexpectedly without warning. You will get better with experience but you will never reach the point of being invincible. There is no shame in staying on the ground if you can't reasonably expect yourself to make a solid attempt at landing in the given conditions.