I absolutely agree with you mate, something the thought always comes to me to try to make me feel sad and regretful, the thought goes like "look at yourself, you are not serious, you didn't discover bitcoin from its very beginning, even when you did towards the ending of 2015, you still didn't invest in it.."

But I tell myself that now is still not late, even though I failed to buy bitcoin in 2015 when it was still very cheap, I am still proud for the kind of money I have in bitcoin today, because I know that even if I had the money and invested in 2015, there is no guarantee of any kind that I would hold it till this time, I probably would have sold it off long ago due to fud, but now, no fud of any kind can drive me into selling my bitcoin when I am not ready to sell it, the confidence I have in bitcoin is now top notch.