Every single person is created unique for identity, purpose and destiny: that is our pre-destination. We have our strengths, talents and weaknesses. If you are working on an area and, most researchers say, that you can only improve 2 points out of 10, then I'd say that you would work in your area of your strength. For example, if you were working in an area of your strength (7 out of 10), then after working on it for some time, you would end up a 9. If, on the other hand, you were working in an area of weakness, then what was a (3 out of 10) now only ends up as a 5. Identity, purpose and destiny works together with your desires of the heart, hopes and dreams. Your strengths and talents will usually be inline with your hopes and dreams. You have a free wil to choose either way.
Sometimes, our identity, purpose and destiny can be distorted from our created being because of the external cultures that we are born into. Also, what you make out of your identity, purpose and destiny is free will. You can take it as far as you want, or you can relax and take it easy. Remember, to carry heavy loads, only true identity, true purpose, and true destiny will do the job. No one knows you better than God Himself. So out of a personal relationship with God (through Jesus Christ) you come to know Jesus. When you know Jesus, you start to know yourself. Jesus said "I am the way, the truth and the life. No one can come to the Father except through me." and also "The thief comes to steal, kill and destroy. I have come to give you life, and life more abundant."
Hope this helps,