What is a lesson that you wish you learned earlier in life?

I recently learned how to cook properly at 35, and it's been a game-changer. I'm saving money, eating healthier, and actually enjoying my meals. It got me thinking about other skills I wish I'd picked up sooner. What's a skill you wish you had learned earlier in life? Something that's made a significant difference in your day-to-day living or overall happiness?

What would be the one professional lesson that you wished had learnt early in in your career ?

I interned at a company for more than 10 months. Gave my heart and soul to it They made me work late nights, gave me so much work I completed them all And now they denied a full time offer citing budget reasons I feel like a loser now. This is so not fair. Now placements at college are also over so theres no hope left Completely loss of words. I don't know what to do Can someone please guide me

You can't learn everything from your own experience, you need to learn some hard life lessons from others experiences too! What's the advice\learning that you think that someone should have told you earlier?