Please don't hurt yourself. Not everybody here on Earth lacks hope and a determination to do the right thing and see things through. We can do this and make this all mean something for ourselves - letting our future generations inherit a world better than what we did, and universally improve the conditions for all living beings here on this planet.
I have been in a pit of despair just like you seem to be right now. I know it's hard to see the light at the end of the tunnel, but it's there if you seek it out. Start by controlling what you can - help yourself to feel good, get some fresh air and some sun, eat good food that nourishes your body, do fun things and expose yourself to things that uplift you - if it calls to you!
The news often stirs up fear and feelings of helplessness. It's intentional. It gets clicks and it is exactly what those in power want us to feel - helpless and afraid - small and weak. These violations of human rights will not be able to continue much longer, public awareness is reaching critical mass. Take a break from social media and news if you can. Have a good time with the people that love you, you deserve to be happy and healthy - we all do.
The Solarpunk movement has given me a lot of hope. You can find it on reddit at reddit.com/r/solarpunk and slrpnk.net here on the fediverse. Consider reading about the movement and engaging with the community. But please take a break if there is too much doom and gloom.
We are not doomed! Don't pay attention to the headlines and articles that reach that conclusion. Even if that is the prevailing feeling many are feeling, we are SO close to being able to expose the artificial scarcity and games of the so-called elite, and start living in balance with our planet and collectively thriving!
The best thing to prepare is to not be fearful and to not panic.
I suggest that everybody protest against factory farming and participate in boycotts. Call lawmakers and regulators to take direct action against these companies and their dangerous practices (and hold them responsible).