first - welcome to the board! I know I was out for a few weeks so if you've already done this sry for the re-peat:
there's a thread under the open titled "getting to know you" - gives you a chance to get to know us better and tell us more about you!
as for your commute home - I also commute up a mountain every night 6 miles, some days in 30+ mph headwinds. My first thought when you talked about the struggle was: do you eat anything before you head home? I found I was wearing myself out during my commute home until I started eating just a little something about 20 mins before I left work. Also, do you drink during the climb?? even if you aren't hot - I make myself drink about every 10 minutes during that climb just to make sure I stay hydrated.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"