Dear future Self,
First of all, the fact that you are still alive to read this letter is itself a blessing, thus be thankful to God. I am doing really fine and I wish all the happiness for you. But remember Life is a mixture of both good and bad times and neither of them will stay forever. In case you are facing a rough time, I want you to know that you have withstand them earlier and came out even more fierce. Last but definitely not the least, I suggest you to love yourself unapologetically because you deserve it.