I was doing 19ish miles one way for a month and loved it. It takes time, but I just enjoyed it very much. On the way home I would crack open a beer midway to enjoy and I did enjoy it. Well sometimes 2 10% beers, but then I was buzz riding, but it was after midnight as I worked second shift, so I was alone for the most part.
If you have the time, no problem. I am riding over 20 miles on the way into work now and it is VERY hilly, and sometimes I do it on a fixie. I just love riding a bike, so for me it is great. Enjoy.