[ex-aws-dude]

Personally I regretted grinding so much for high grades

Once you're in the industry no one cares about that and I found in practice people with lower grades than me still ended up at the same or better companies

In retrospect it would have been better to put that time into side projects, interview prep, clubs, socializing

Obviously you don't want "bad grades" but I think there is diminishing returns after a certain point

[leros]

I regret grinding on classes so much too.

In grad school, I was allowed to make one B. Any more and I couldn't graduate. Once I had one class left and made all As, I decided I'd be lazy and get a B. I worked 50% less and still made an A. It made me realize how much extra I had been working for marginal improvements.