I am genuinely sorry to hear you took such a large loss. When you are trading options you always need to look at the notional value of your option positions. It is easy to look at the debits/credits of the options you are putting on and not realize how much notional value exposure you are carrying with all of those positions.
To keep it from happening again you need to not over-leverage and also stay diversified. If you are willing to lever 2x max (notional of option positions vs. portfolio equity), then stick to that. And then spread that 2x out over many positions and strategies. Maybe have positions in 8 different underlying using no more than 0.25x leverage of your portfolio for each, and then diversify through strategies as well by having some spreads, butterfly's, ICs, etc. If you do that you will not have 30% of your account wiped out, not even close, even on your worst day.
As far as crawling back to even, if it were me I would get back on the horse again with my new rules (the rules to keep you from over-risking like this again), and start depositing money in from my regular income to get back to even. Consider it your new lease on life and be glad you didn't blow an amount much larger than 30%.