The difference between the rich and the poor is simply the ability to know the right time to sell.
Even if you know the right time to sell, can you patiently wait till that time. I am saying this, because i have once experienced it. There was a particular coin i knew when it would rise. As a matter of fact, i was telling my friends about it, yet i could not wait till that time, because i was in serous need. This made me to blame myself, but i had to take it in good fate.