Hello, it's a pleasure to meet you.

I'm so sorry you're really down on yourself right now. Everyone has that moment where they really sit back and wonder what they're doing or what they're trying to achieve. I promise, you're meaningful. Your life is full of meaning, even if you haven't realized it. Right now, you need to focus on getting better. But once you do, you'll be back on schedule and everything will be okay. Right? You do matter. Right now, everything seems really bleak, but patience is key. Time will pass, bad things will pass, the storm will clear up and the sun will come out.
I hope these links help you somehow.
I hope you feel better soon. Have a wonderful day.