Take a step back.
You are focusing on the "you" in the workplace, and you should take a step back, just for a moment.
How do you feel about the company? How do you feel about those above you? How do you feel about those around you? How do you feel about those you deal with? How do you feel about your abilities to do the job?
Your relationship with your workplace is complex (I'd wager), and not so simplistic as "it's boring."
Then, put it into context. How "safe" is your job? Do you know others in far worse or far beter positions elsewhere?
Putting it into context is particularly difficult. I have a friend who's a sales trainer for an automotive company. He grumbles about work continuously. He finds his bosses arrogant. The President of the company once said to no one in particular - "If you don't like it here leave." So he did. Went to a Japanese automotive company. He loathed it there, quit, and came back to his former company. Th president gloated over the return - "Grass isn't always greener" kind of stuff.
Well, it's been a few years now, and he's grumbling again and he's looking elsewhere again. He knows he won't get paid better elsewhere. He knows that there are workplaces that he won't be able to tolerate. Really, the problem is him, and not the workplace. And he won't be able to fix it until he realizes it.
I don't know if that can relate to your situation at all - but it's amazing how problems can sometimes dissolve when put into perspective. (I should talk - I'm the first to obsess with a situation, and then a year later can't imagine why my shorts were in such a knot....)