Such a great thread, for a change.
Everyone started out as a “white belt” (I put that n quotations because some styles don’t use belts, but the principle is the same). How did we learn to take a punch? By getting punched. After a few times, you realize the world’s not going to end and you just carry on. Sure it still hurts, but you don’t get that shocked and panicked feeling after a while. It’s no different than most other things that really scared you at first, then because normal.
Of course you got swept and landed flat on your back. After a few times, you’ll learn to tell when it’s coming and get yourself out of trouble before you get into it. And when you get thrown, you’ll learn how to roll out of it. And when you can’t, the schlock of it all will become practically nonexistent because you’ve been there many times before.
I started out in a bare knuckle karate school that was a kyokushin offshoot. The first time I took a solid kick to my thigh, I thought I was done for the night. Talk about a sting. Luckily my wrestling experience kicked in relatively quickly and I endured. Same thing the first time I took a solid side kick to the stomach. No one laughed, mocked me, thought less of me, etc. Why? They’d all been there, done that before. But I truly didn’t realize it until a while later when I saw enough new people come through and do the same exact thing.
You're going to get discouraged from time to time. You’re going to feel like you’ve got everything down and you’re at the top of your game from time to time. This will ebb and flow. Expect it. Don’t be shocked when you think you’re a badass and someone totally schools you one day, making you doubt everything you’ve previously thought.