OK, now take that 30% and transfer it into a savings account before anything else. It doesn't exist. Your pay is what's left. Now budget expenses and life.
Start living when you have a little insurance. Even six months buys some peace of mind.
If you have a family you have to modify a little to ensure they can have a tolerable life meanwhile, and a little time out etc. but you get the idea.
If you keep this idea going even in good times you'll be buying rental properties with it eventually.