I'm a university student and I thought that I could earn some money by investing in the stock market. It went poorly. At one point my total loss was of 400€, luckily, the shares went up again and I sold everything when I was 150€ down. I know that this might not sound as a big loss, but it was the complete opposite of what I was expecting, thus, it has greatly dissappointed me.
I made my decission to sell after I had a really bad sleep one night because of the stress of loosing. I realized that the market was not for me. I know that I could have holded, but the pressure and the stress were too great for me.
I feel a bit stupid and naive after this experience, and it is also sad to think that I could have used those 150€ in a better way.
But yeah, I feel like I have learnt a lesson: Don't play with your money if you can't afford to loose it.