"Therefore hath the Lord recompensed me according to my righteousness, according to the cleanness of my hands in his eyesight." Psalm 18:24
People may see you as worthless-- you may see yourself as worthless. Some may see you as never amounting to anything. Some may see you as just another fanatic. Some may see you as an ordinary housewife. Some may see you as too young to do anything for God. Let me repeat myself-- it is about how God sees us.
God has a plan for each and every one of us. His plan is not necessarily your plan or someone else's plan for you. Regardless of how you see yourself, God works with you-- if you'll let Him-- to make you into the person He desires you to be and desires to fulfill His plan through.
What others saw about each one of the people that were mentioned above was correct in the natural sense and from all physical appearances. But God sees things differently. He sees us from His perspective. He sees us as we shall be. He sees the finished product of a man or woman, boy or girl, who will surrender themselves to His plan. He sees us through the righteousness of His own Son. What He sees, and says, about us/you are more correct than what you or anyone else does.
Have a great day. It is about how God sees you that is important.