You always remember the successful investments you didn't make, but not the unsuccessful ones. Think of all the money you didn't lose making bad investments.
If you're a little faster than average on the draw and have money to burn, the profits from the successful investments outweigh the money lost on the unsuccessful ones. E.g. if you have $50k, and spend it on five companies, only one of those companies has to be Apple for you to make way more than you started with...
Apple isn't a '1 in 5' company, though.
Agreed! I have a couple of those as well, but you're right, you tend to forget them.