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it is very important because you will have an excellent communication with your colleagues if you acceptable
That really depends. Firstly on how important it is to you personally to be accepted and what being accepted means to YOU. Is accepted "feeling good in the team" or "taking joint vacations and barbecues with co-workers' families"? Secondly it depends on how crucial being accepted is to your work, your results and group work / results. So, everyone has to give it a thought and give him/herself an answer for there is no universal answer / solution to your question ;)