When a person has a low opinion of themselves they tend to put themselves down, limit their achievements because they don't believe they are capable of achieving anything great. They put others needs before their own.
They can constantly crave the approval and acceptance of those around them only to dismiss any praise they may get because of a core belief that they are not good enough. This thought pattern restricts them from moving forward, blocks them from new opportunities that in turn give them experience and with experience can come confidence.
If a person fails from trying, they will learn something from that experience and again, move forward. None of this is achievable when we don't take that first step and in order to take that step, you have to believe you deserve more and that's where I come in....