This shit is killing me. This shit is killing me.

This shit is killing me. This shit is killing me.

Alternatively, if that was a conscious decision to censor that word, sh*t or sh-t is the usual way we'd write that.

This shit is killing me. This shit is killing me.

This shit is killing me. This shit is killing me.

"sht" is fine if it's intentionally censored.

Once again, the hot weather started coming up to my cityis becoming hot again. Once again, the weather is becoming hot again.

Once again, the hot weather started coming up to my cityhas come back. Once again, the hot weather has come back.

You COULD potentially say something like what you've said, but I can't think of a way to say it naturally.

Once again, the hot weather started coming upto arrive to my city. Once again, the hot weather started to arrive to my city.

Once again, the hot weather started coming up toto get hot in my city. Once again, the weather started to get hot in my city.

I feel like dying, my bodyI am sweating profusely, my head is dizzy and stuff, I don't want to do anything. I feel like dying, I am sweating profusely, my head is dizzy, I don't want to do anything.

"and stuff" is redundant, so I deleted it.

I feel like I'm dying, my bodyI'm sweating, my head dizzy's spinning and stuff, - I don't want to do anything. I feel like I'm dying, I'm sweating, my head's spinning and stuff - I don't want to do anything.

"I feel like dying" means you want to die. "I feel like I'm dying" means you feel it's so hot you might die. I don't know which one you want, but I hope it's the second one. "...and stuff" is acceptable for casual writing, but not formal writing. Since you've used contractions and have sworn, I'm assuming you're going for casual.

I feel like dying, with my body sweating, m. My head dizzy, and stuff, I don't want to do anything. I feel like dying with my body sweating. My head dizzy, and I don't want to do anything.

I feel like dying, my body is sweating, my head is dizzy and stuff,. I don't want to do anything. I feel like dying, my body is sweating, my head is dizzy and stuff. I don't want to do anything.

But I don't want to stop writing everyday, as I mentioned, I can't let that asbe an excuse to procrastinating. But I don't want to stop writing everyday, as I mentioned, I can't let that be an excuse.

Or I can't procrastinate.

But I dwon't stop writing everyday, a. As I mentioned, I can't letuse that as an excuse to procrastinatinge. But I won't stop writing everyday. As I mentioned, I can't use that as an excuse to procrastinate.

When did you mention procrastination? If it was in a different journal entry, maybe mention that (because the people who read your journal entries haven't always read your previous ones).

But I dwon't stop writing every day, as I mentioned,. I can't let that asbe an excuse to procrastinatinge. But I won't stop writing every day, as I mentioned. I can't let that be an excuse to procrastinate.

“Everyday” (one word) is an adjective. Here it should be “every day” (two words), an adverbial phrase. This discussion might be helpful: https://forum.wordreference.com/threads/every-day-everyday.706715/

But I don't stop writing every day, a. As I mentioned, I can't let that asbe an excuse tofor procrastinationg. But I don't stop writing every day. As I mentioned, I can't let that be an excuse for procrastination.

But I don't stop writing everyday, as I mentioned, I can't let that asbe an excuse to procrastinatinge. But I don't stop writing everyday, as I mentioned, I can't let that be an excuse to procrastinate.

Could also be "an excuse for procrastinating"