No matter how much you think you are better at working alone, or that you can provide more and better results if you work by yourself, the very nature of being an employee of a company means that you are merely one of the cogs in a larger machine. Therefore, you have to work with the other employees.
Cooperation is very important. Even if you have personal differences in opinion with a co-worker, or you do not see eye to eye about a matter entirely separate from work, you should still be able to cooperate and work together with him. Set aside those differences, at least for the time being. Your boss will appreciate you more if you are able to prove that you can separate the personal from work and still be able to cooperate with others.
Yes, you read that right. Socialization is also very important. You can’t be all work and serious talk all the time. Once in a while, you have to take a step back, relax, and socialize with your co-workers. This is one way to cultivate your social skills while strengthening your relationship with the other employees or members of the team.