BTC investment help needed

Currently have 50% of net worth in fiat in exchanges & cant work out what to do @ this price, feels a touch high? - my theory is miners make too much money at these prices right now not sure if thats correct.

Originally invested 25% of net-worth back in middle of april run up.

Main goals:

- Buy a house with no mortgage - something i probably be alot closer to if i just held from spring. (cant manage greed i guess)
- Promote crypto currency not necessarily BTC alone.
- Not die of a stroke due to price volatility.
- Not lose 50% of net worth but part of me think well screw it i'll be dead soon. I can just about to afford to lose it but it would hurt.
- The ultimate dream is it would be nice to not rely on having to work to survive so i could just focus on political & social change since that is what i truly wish to do most. - maybe i shouldnt be even holding fiat? hmm

I'd be interested to hear others past or present about their investment/crypto goals... maybe stories of how you kept waiting to buy but didnt also hehe