Student life with not-so-good educational foundation

When this is your every day and every night setup, sleep deprived and relying on coffee that barely fights sleepiness, you can never tidy up and attend to your other needs once you've started. This setup happened because I'm taking a degree in college but I feel like I should go back to elementary.
I am a person considered as intelligent but I cannot prove it or show it because, as I've written in the title, I have this not-so-good educational foundation. I came from a public elementary school from a province, though it is okay to start basic education anywhere and start again in high school, my high school was much worse. I'm not trying to bad mouth my school, though I can say a lot, I'm just trying to say that a good educational background before reaching tertiary education is a MUST. I have realised this because I have experienced many difficulties when I entered college. It felt like crawling in quicksand and gasping for air to the point that I got depressed because everything was overwhelming and I was no good. Everything is out of my league. Up until now, I still have to work on my study HABIT and use up ALL, and I do mean ALL, of my free and vacant time because I have not developed any study habits before and I know almost nothing because I have learned so little during my basic education, so I have to REALLY make an effort and forcefully flip myself to someone doing the things that did not exist in my life. I just had to if I want to pass. I cannot have time to breathe and take care of myself, like literally, because if I take my time, I'd be left behind even more.
I might sound like I am exaggerating everything, but my point is, it is REALLY hard without a good educational background. I may be intelligent but I have not honed it before I reached this point. So, if you're struggling like me, you're not alone, there are ways to get through this. And if you're someone else, especially someone in the same or similar situation as mine and plans to get into the same adventure, please, PLEASE condition yourself beforehand. Like, think things through, realise things early, and as my father always says, "regret things before it happens". Prepare for it.

P.S. Pardon the messy table. I use our dining table because I don't have my own study area/desk.
P.P.S. Please don't judge me. I just finished a homework and am about to sleep, so yeh...
P.P.P.S. I do accept suggestions and help. Hehe! ^-^v