The thing I regret The most is not investing on Bitcoin when I had the opportunity to do so many years back, when they told me about Bitcoin I felt it won't grow any further so I never wanted to invest on it,
Sometimes we do not believe in uncertainty untill it becomes certainty or have a reason to believe. Doubt is one thing that causes setback. People always make use of this word
"seing is believing" but i see that word as a deceitful word. Because if we want to see everything before we believe, we may see it but we may not have the chance to achieve it. Those that didn't believe in bitcoin until they see it grow, was not fortunate to have it when it was cheaper. now they pay the price of self doubt by buying bitcoin from those that believe in bitcoin but didn't see. So there is price for whatever we believe and that is the price people are paying now by buying bitcoin expensive, and regret why they didn't buy earlier. The results of self doubt is regret.
as time goes on I later found out Bitcoin is still growing and waxing in size I regretted deeply and I started wishing I could turn back the hands of time But I'm happy I have started the journey.
The best part of your story that gladens me the most, is that you have started you journey of bitcoin now. One thing is sure, now is not too late to invest in bitcoin, since bitcoin is still in its early stages it would have been late when bitcoin would have crossed the line of $400 - 500k and above. By then gaining %100 or %200 growth would take some years to achieve compeard to the early days of bitcoin when %100 was so fast to achieve. Though I don't know how my assumptions may be, but I believe the earlier the better.