I would say that it would be best to let your bitcoin grow. Especially nowadays, I noticed that there were few people doing bitcoins. Like for example, my colleagues, aside from doing our full time job, they're investing in doing bitcoins and trading. Based on my opinion, people is just now adapting the importance of earning in bitcoin and exploring it just right now, like in what other ways they can earn more. So, since it was just recognized by individual lately, I think it's better to continue joining campaigns and other projects to earn more bitcoin until the right time comes with the right value or price of bitcoin then I can decide whether to keep it or sell it.
What do you mean to let bitcoin grow? Bitcoin price will surely growing but if you do not invest on anything how can you grow your money? You should put some money into this to make this happens. Are you joking when you said this? There is a lot of bitcoin players nowadays and that can be seen through the market price which is keep on growing