I find it remarkable that people are depressed about Bitcoin being $4K USD. I remember when BTC was $60. I remember when it was $120. I remember when it was $225. I regret ever selling any BTC I have ever owned from the $60 price point and up. HODL.
I also regret not buying bitcoin January 2011 when I was introduced to bitcoin at the price that is very insignificant, this has not stopped torturing me too, till now, I still wallow in regrets how I would have been probably a billionaire by now because the money I should have used for investment then ended up on a wine bar with a broken bottle.
Well, I have moved forward and Holding the little I can hold till 1 satoshi becomes $10, at least I have about 20,000,000 satoshi and I hope that 1 day, 1 satoshi will equal $10, I know it sounds funny but till then, HODL to the moon, no more mistakes, time to faith it and hold strong.