Are you one of those people who expects goodness or gifts from others? From now on, stop with that feeling. Because that feeling only makes you disappointed. When you apply for a job, you expect to be accepted, but don't expect the kindness of the manager who interviewed you. You will not be able to get the kindness of others until you deserve it.
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Act and act fairly and professionally. Then others will give you what you deserve. What you receive is what you do both in thought and deed. You don't get the kindness of others, but you get the goodness of respect for yourself.
A manager, when interviewing you, will accept you to work based on an assessment of your potential. So the manager accepts you not because of his kindness, but because you make him valuable.
So, start doing good for yourself. Practicing a skill is a form of kindness to yourself whose rewards you will get through the hands of others.