Invest not only in bitcoin but also in the top 10 currencies. Capitalization is growing at a frantic pace for 330 billion. Your children in the future will be grateful for you, now many large companies to think over introduction of the payment system bitcoin.
That seems like the right advice but at the same time, we should not invest in projects we do no understand or in projects in which we do not believe in, for example out of the top ten coins I will not invest in bitcoin cash, I'm still holding the airdrop I got on august first but that is all, and I will also avoid bitcoin gold and ripple the rest seems like good projects to me.