Looking forward we should ignore luck, because as you note it's not actionable. But when looking backwards we should take it into account.
For example: don't let "bad luck" prevent you from starting a company, and don't get discouraged by others' "good luck."
But, after failing or succeeding, you should be realistic with yourself and admit luck played a role.
If you've been successful: realize that your success is not 100% the fruit of your efforts -- be a bit humble about how you got where you are.
If you've failed: realize that perhaps you just drew a bad hand and maybe it's not the right environment for your idea -- don't be too down on yourself, and don't be afraid to try again.
For example: don't let "bad luck" prevent you from starting a company, and don't get discouraged by others' "good luck."
But, after failing or succeeding, you should be realistic with yourself and admit luck played a role.
If you've been successful: realize that your success is not 100% the fruit of your efforts -- be a bit humble about how you got where you are.
If you've failed: realize that perhaps you just drew a bad hand and maybe it's not the right environment for your idea -- don't be too down on yourself, and don't be afraid to try again.