Hi, everyone!

I was struggling to write this rant (it's been a while since I've posted anything here) and was trying to put in enough details, but it was getting too long and heavy, so I thought I should try to keep it concise.
I get frequent headaches and feel physically and mentally exhausted all the time. Here's a little list of what I think lead to all this -
- Leading a team for the first time
- Not-so-great junior teammates
- Working with backend for the first time (doing it on top of my frontend work)
- Long working hours (unpaid overtime)
- Being underpaid (for all the things I now have to do)
So, I overworked myself (and still fell short in delivering my sprint goals) and after some time, considering all of the above things, I decided that the best course of action would be to give my notice and take a break for a month or two.

I talked to my boss about my struggles and my intention to leave, and after some discussion, he basically said that the difficult part of the project was over and things would get smoother from the next sprint, and so I should stay on and discuss on the matter again after the sprint. That sprint has passed now and I have still somewhat struggled to work each day with diminishing motivation.
I'm not sure if this is the right time to leave, and I just don't have enough energy to look for another job and go for interviews. So, I guess it is a bit of risk not having something lined up before I quit my (first ever) job, but I think I shouldn't have much difficulty finding something for myself.
At this moment, I don't know what to do, but maybe, if things continue to be dour, I may hand in my notice soon.