Now that winter is finally starting to leave , and it doesn't feel so cold inside my room, I feel like the action of my guitar has gone higher. This is making the guitar more difficult to play for me. Is this normal? Will something like this happen every season change? When winter came, I didn't feel much of a difference, but now all of a sudden the action of my guitar seems noticeable higher, and on top of that it appears as if my callouses have disappeared. How do I prevent thing like this from happening? can I manually lower the action (is it advisable?). I have a Yamaha f-310. I take good care of it, and always keep it inside the case when I'm not playing it.