Getting outside helps me to feel better about things. Sometimes I'm resistant to it - maybe because i want to wallow in negativity a bit?
Climate - truthful information about climate, related activism and politics.
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
Do you mean "how do I stay positive?" Honestly, the best thing you can probably do is to stop reading the news (or curate only positive sources). You likely already know what's at stake, but you likely won't see any impact from your actions directly.
By which I mean that this is a collective action over time. Keep reducing your reliance on fossil fuels and petroleum products, encourage your friends to think about their own choices, but don't feel like you need to take on the entire burden of humanity yourself.
Remember, you're not the only one who cares.