A no regrets ethos: take the great opportunities in front of you, and don't take the ones that aren't in front of you.
This seems simple, but most people focus on opportunities that actually aren't in front of them, and thus aren't live options.
Or they don't jump on a great opportunity because it feels like luck, or doesn't fit into their preconceived plan.
If an amazing opportunity is in your grasp, grab it!