How to be more aggressive in sports?

How do I become more aggressive in sports?

I could be a lot better than I am but I think I'm just afraid of getting hurt.

Example: In basketball I almost never drive up to the rim because I'm afraid to hurt someone else or they will hurt me.

How do I not be so obsessed with getting hurt?

I mean I have many scars on my body so I'm not afraid of the scars.
How to be more aggressive in sports?
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