Stop trying to improve your weaknesses and start improving your strengths. That’s your best chance of reaching greatness.

1. You have a limited amount of time and energy for self-improvement. If you spent your time and energy improving your weaknesses–you will never be more than mediocre. You just can’t turn a weakness into a strength. You don’t care about it, and certainly not passionate about it (which is why it is a weakness to start with.)
2. If you spent your time and effort on improving your strengths, you might just reach greatness! You are already passionate, excited, and love your strengths. Otherwise you wouldn’t list them as such.

Source: 2 Reasons Why Ignoring Your Weaknesses Will Make You Great | Inc.com