Answer: Your nemesis may be a credit-grabbing suck-up, but right now her job is a lot safer than yours. Start-up companies are too small and vulnerable to tolerate much dissension. Anyone who is not considered part of the team will soon be on the outside.
Trying to bring her down will not help to lift you up. So instead of wasting energy on hatred and retaliation, start working to improve your own reputation.
First, take a long, hard look in the mirror. You can easily see your adversary’s negative traits, but what about your own? Would co-workers describe you as helpful, pleasant, and cooperative? If not, figure out what you need to do differently.
Next, you must mentally call a truce with this woman. Even if you hate her guts, your own success depends on improving this relationship. Take the first step by sincerely resolving to put the past behind you, then asking if she will do the same.
Finally, swallow your pride and ask your manager how you can improve. Listen to his answer without arguing or complaining. Then try to be the kind of team player that this company needs.
The bottom line is that you can’t change other people. You can only change yourself. But sometimes, when you adjust your own attitudes and behaviors, you find that others eventually respond in kind.