For me personally, Understanding that life is pointless and rly not that serious has actually HELPED me with despair. I can understand how that might be a slippery slope, but it helps to know that nothing in life is as serious as society makes it out to be. It slowly brings about a transition from 'life is pointless <\3' to 'heck yeah! Life is pointless! :')' because that way it reminded me "i can do whatever i want and feel good when i want to because this existence genuinely doesn't have much deeper meaning so why not just enjoy being here i guess"
Sorry if this doesn't help, I'm just explaining my own logic and what helps me with recovery