My first fear was for only to sell bitcoin , I getted into bitcoin about 2013 and at that time buy and sell of bitcoin was not easy task because not many services were available at that time to buy sell directly but we needed to wait for orders and give orders at sites like localbitcoins.com that was really not better way and also few people were saying that there is chances of scam , so for me a big fear was in my mind that what will happen if I make earnings in big amount but not will be able to sell easily .
But after one to two months I found a person who was from mine country and told me that you can buy and sell any amount of the bitcoin and payment will be instantly , and I found that he was really honest person and still today he is doing work very well of buy and sell .