Learning from personal mistake is best for improvement. But it will be more better to learn from others experience
It is the worst learning approach. Because sometimes you will have to pay expensive cost.
Sometimes you won't have chance to fix your mistakes.
Sometimes you will have to spend years to fix your mistakes.
So please listen to advice and try to think about it very carefully. Sometimes you will not understand advice if you only glance at it.
Learning from advice and mistakes of others are better, if not the best.