Well, if you are thinking so small, in terms of doubling, then you seem to not really be prepared.
There are people who regret selling too much bitcon too soon because they sold at 100x or more profits, but then bitcoin kept going up.
Even my own portfolio is likely around 29x profits, but it had gone up to 69x and it was as low as 15.5x last November, so even within the profits, there can be a decent amount of fluctuation.. and even if I might have shared some threads in the past regarding how to think about beginning to rake profits, and surely each of us has to make our own choices regarding when we might begin to rake profits, and how much profits we might want to rake and in what kind of increments.
A good thread on raking profits is Rpietila's (Risto) (RIP) 2013 Thread entitled:
(SSS) - A Sane and Simple bitcoin Savings plan I can't specifically say with others intention but for myself I do plan to hold for long, but what made me mentioned about doubling their money for profits making is when those who weren't belong here had this mentality that bitcoin is being operated as ponzi were they could investment and are well sured to make back their profit within some specific timeframe as they wishes.
These sets of people will never in a day be equated to someone like your personality, although physically I can easily justify their actions and acting words towards bitcoin, considering the economic situation within my country and those who always had of or thought of bitcoin think and have this mindsets to have became Rich overnight without knowing it doesn't function that way. Which is why I said your experience of holding and accumulation strategies and your portfolios can't be simplified or being the same as your own mission and passion to accumulate gradually, while theirs could be for a daily bread and family progress ( selling off their little profits for family benefits and feedings).
Well, my journey here has just evolve and I will keep striving and pushing harder to make sure In time to come I won't come yelling for my non being able to utilize the opportunities. Let say for instance they way you did and yet you keeps stacking up without even considering the percentage increase and decreased, well I must say I give a maximum respect to you and there is always a knowledge and a keynote to drived from you whenever I came in counter with your post and feedback, I don't hesitate to read even though it takes me time to comprehend all you put down I know I am gaining a very strong knowledge that will sharping and shaping me mentally and physically, as believe knowledge is what keeps us sailing and there's no day I can boast of without you putting in front line as someone who has made us understand importancy of belonging to a very broad community like Bitcointalk.