A lot of whales are also waiting to buy in cheap, they are stepping on each others toes to get in the door. When bitcoin hits 3k levels there is simply too much buying pressure. You can be too greedy by not selling but it can also backfire by waiting for cheap prices that may never be hit again, always cost average your buys.
Currently bitcoin is 3500$ almost and when you say that the support is too strong at 3000$, means that bitcoin will not go below 3000 dollars. The difference between 3500 and 3000 is only 500$ and this is the best time to buy the bitcoins and even if it falls to 3000$, it will surely cross 3500$ again and further up.