Just keep pedaling

I biked 45 minutes this morning (12 miles).  I'm not too worried about my speed yet (although I'm going to need to get faster at some point).  I'm more worried about the boredom.  I wanted to bail after 15 minutes, just because I was bored.  It's different when I bike outside the scenery changes.  I'm going to have to find something on TV to focus on while I'm riding indoors.  Until I find something, I just have to tell myself to just keep pedaling.