Meanwhile in spain: Unemployed, barely can pay bills, my pet is sick to boot. On top of that: I learned about Bitcoin back in 2009 but didn't invest because it was always linked to criminal activity so didn't look into it, as a result, I see it on mainstream news 4 years later about how it went to 700 dollar a coin. Thank you Bitcoin for making me suicidal for life.
If you are feeling suicidal, then there are problably deeper issues than just missing out on buying when bitcoins were pennies each. I can point to dozens of major episodes in my life and say "if I had only known that...".
Depression is usually caused by some set of cognitive distortions. I would suggest reading "The Road less Traveled" by Scott M. Peck and as counterbalance "The Psychology of Self-Esteem" by Nathaniel Brandon. Send me a PM if you can't afford them and would like a text copy. I use to deal with serious depression in the past and it was caused by some seriously flawed thinking.
As for missing the train on Bitcoin. It is very unlikely. The value (capitalization) seems to be following metcalfes law, so as more people adopt Bitcoin, it will continue to grow A LOT.
A price of over a million dollars per coin within 20 years is fully reasonable according to my analysis. I would expect it much sooner, but major mining companies sell most of their coins to continue operations and I believe this will start to create a huge downward pressure in the future slowing growth. On the positive side, it may create more stability though.