It is possible to cross more than $20k but how long it is going to take nobody don't know because the market situation and from the news makes the piece of bitcoin more stable. It is a very good sign for bitcoin to hold them as long as possible to increase the price.
I'm pretty sure it can happen within 2 years 
2019 might be a good year for us since a lot of good news are happening around the world in terms of regulations from the government. I know bitcoin will make a new peak slowly but surely, we must wait for that one and have more patience. $20k will happen again soon, so its good for you to have more bitcoin on your wallet.