Unto Thine Own Self Be True? What does this mean?

Shakespeare said it many years ago. Unto thine own self be true. What does it mean? Truth is the ultimate concern of Christianity. When you are truthful about all aspects of your life you can live without fear. You can eliminate lots of other negative emotions also. Honesty is the key to living a truthful life. When you are honest and open, you can really live the life you want. You can find congruence. You can find joy. Congruence is the agreement between who you want to be and how others see you. Honesty is necessary to find congruence. If a person is spending a lot of energy trying to hide a lie, he/she is not living an honest, productive life. When the lies are eliminated, all the wasted time and energy is put into joyful matters. You must decide how much you will suffer for others, draw a line and then honor your decision. When others ask you to do for them, you will have a set guideline on how much you will sacrifice for them. You can be honest and accept things you are willing to do and refuse when your limit is reached so that you will not cause pain to yourself. You can remain honest and true to yourself. It is good to help others but not to the extent where you are overly taxed from it. Learn to say that you are not able to help this time, but try again next time. If there is an emergency where you are needed, push yourself. But for routine matters, don't be timid about refusing when your limit has been reached. This will save you from pain and guilt that comes from doing things for others but feeling animosity toward the people asking for help. When you have a limit set, you can avoid the negative feelings and only help when it comes from inner goodness. This limit may change from time to time, like when you are feeling worn out or stressed out, you can't do as much as when you are well rested and feeling top notch.
When you are honest with yourself, you will be a much more effective person. You will enjoy life again. You can find your niche in the world. You can find congruence. You will live in truth. You can have inner peace.