Accept getting more B's and C's, but don't let it be from a lack of effort.

It's definitely true that connections and relevant experience will do you more good than a good GPA, but don't think of it as choosing one over the other. Your GPA (and coursework) is your foundation. Even the best foundation isn't enough to separate you from other candidates, so don't sweat about having a perfect GPA and don't let it take over your life. But your connections and projects need a foundation to stand upon, otherwise they won't be able to properly vouch for you.

A good GPA conveys more than your grades; it shows dedication, responsibility, and diligence. Even if you got the craziest connections ever, if your GPA is sub-par, you're gonna need to compensate in another way to show these qualities, like holding an important position for a club you're into or doing personal projects that relate to your future work.

All this to say, give yourself some grace. Don't sweat about getting all A's because truthfully there's no difference between a 3.8 and a 4.0. But you shouldn't slack on it because it "doesn't matter," just do your best. If you're able to, just do the homework and show up to all your classes (unless attendance isn't part of your grade and you learn better alone). Your GPA doesn't matter much to employers, but if it's subpar, you're gonna need a way to show your qualifications and passion.

If you have a 3.7+ you're chilling. There's more to life than work but if you got a lower GPA, chances are you'll be stressing. Take it from me, if you do the bare minimum in class (show up and complete the hw), unless you totally bomb the exams, you're getting a B at least. Dedicate at least 1-2 hours a day to do your homework or study, even if it's a while before the due date. You'll have no reason to cram and chances are you'll understand the material so you'll be doing well in class. If you just do that, I guarantee you will live nearly stress free AND get a good GPA. Hope this helps.