Oh younger me. Not even knowing how a reddit tip bot worked.
If I could just go back in time. Tell him to save those litecoins he was mining on his laptop graphics card.
Tell him that the he forgot to add a 0 to the 2 new GPU's he ordered.
Tell him that its not worthy to daytrade, just hodl and wait it out, you've already struck gold with the tiny statistical odds of learning about block-chain and understanding the difference it can bring to this selfish middle-men filled world economy.
Tell him not to sell those darkcoins when they jumped to 10 cents.
Tell him not to go to that one-coin seminar to call those scammers out and miss the one day the coin he had mined for so long pumped.
Tell him not to listen to the FUD'ers warning you to invest into the Ether crowdsale.
Tell him not to give up on the technology and go waste a couple years chasing something else.
What would the present be like if I could just go back in time and slap myself in the face and leave a letter with the above text in it.
Who knows the difference that powerful person would be able to make today, the lives he would have bettered, the problems he would have solved, the misfortunes he could have avoided.
Who knows, the past is the past and no technology will ever change that.
What I do know, though, is that future is still ahead of us and being written block by block.