One thing that has changed my life drastically is believing in Allah's plan blindly.
And I know it sounds so cliche because everyone says this but you'll only feel its power when you truly practice it yourself.
To convince you a little more, I'll share personal experience. I used to think that it was entirely my responsibility to get the things I want,i had to work day and night and it was all dependent on me. Allah wants to see me work extra hard even if I'm not getting results. Which is something many people think btw. So what I'd do is I'd stress soo much when things wouldn't go my way. Although I'd do everything perfectly but people would start objecting and creating barriers for me. Then I'd tell myself ke chalo now it's my job to convince each and everyone of these people and I'd try and try but things would just keep getting tougher. I used to pray but didn't ask Allah for much help in these matters because I'd thought that it's my test to see how badly I want it, I'm gonna pass this test. But the tests never ended.
Until one day I suddenly had a realisation. I thought to myself ke if I've done everything in my power to achieve something and it's still not happening, maybe it's not gonna be good for me? Maybe I'm not wise enough to know what's good for me because tbvh, I don't even know what life's gonna be like 24 hours from now 🤷🏻‍♀️
Slowly I started accepting things and blindly trusting Allah's plan. I would put in all my effort but then I'd tell Allah 'I've done the best I could Allah, now please show me if its for me or not. If not then remove it from my life'.
I realised ke life's so much easier this way and guess what? Everything that I was stressing about and working hard for a few years from now is coming back to me, bigger and better.
So all that hopelessness was just to make me realise this.
So I'm gonna simplify this and say, pray and ask Allah for help in every decision and matter of your life, work hard for it, be sincere but then chill.