Did someone back you into a corner? Don't be shy about fighting back. If you don't like something, speak up. There may not be a whole lot you can do about it, but at least you can show your spirit and passion by not backing down.
Step up and take command. You can do it! A goal or project you're working on could use an authoritative push, and you're just the person. Just don't be bossy. No one will listen to your message if it's delivered aggressively.