It’s funny because you are overreacting. This really isn’t dangerous advice, even if it were wrong.

But since it’s not wrong, it’s actually really helpful advice.

Here’s the Mayo Clinic on how to be more optimistic: https://www.mayoclinic.org/healthy-lifestyle/stress-management/in-depth/positive-thinking/art-20043950

They suggest practicing positive self-thought to make it a habit.

Ok I won’t tell anyone else to think positive thoughts. I don’t want to go to jail.

Relax. It’s ok for people to have a conversation. OP can still respond.

😂 ok I’ll allow OP to answer

I would rather live a long happy healthy life than “see reality”. If someone I cared about was pessimistic I would try to convince them to change their outlook so that they don’t die as soon.

Yes definitely. Most of your thought patterns are just habits. You can change your mental habits through repetition. One of the simplest forms of this is repeating a phrase.

Find a few triggers that will remind you to repeat a positive phrase (silently or out loud it doesn’t really matter). The triggers might be every time you brush your teeth, every time you notice yourself feeling stressed, while you’re in the shower, before and after sleep, and every time you check Reddit instead of working.

Every time these triggers happen, take a moment to repeat your phrase. It can be something like “I’m feeling really happy and optimistic” or “I’m pretty sure everything is going to work out great” or “I am so happy because of all the great things going on in in my life”. Smile really big and maybe do a big fake jolly laugh if you can.

It doesn’t matter if you actually believe these things or not. Simply thinking them trains your mind to be optimistic. It gets into the habit of thinking these positive thoughts.

This same thing works for all kinds of negative thought patterns. Whatever you wish your brain would think, just force it to think that a bunch of times on purpose and after a few weeks of training it will just be your genuine default thought pattern.