You shouldn't hold all over the years, many projects during this time will simply die and you will lose a lot of money because of this, you always have to sell something because later it will be too late, you just need to often check the price of the tokens you have in the portfolio.
Ethereum and its technologies are really incredible and ethereum can soar in price very quickly when there will be new updates in 2019, the only thing that hinders ethereum is their team that improves ethereum's capabilities already too much long time.
Not bad, the big players pumped waves but didnt reach a bit, but now all the waves have sunk to 3.17$, but many people have managed to raise huge money during this time, and those who bought waves now need to wait when market will start to grow and sell waves for a great price.
Of course, I used to constantly worry about my tokens and for a market that almost always falls, and I waited impatiently for the market to start growing and now I also have a little excitement, but already there is no such excitement which was before because you get used to everything.
I do not see the point, now 90% of tokens after the listing on the exchange after the ICO are sold in 100 times cheaper and therefore it is more profitable to wait when the company in which you are interested will finish their ICO and the tokens will be traded on the exchange and then you will can buy tokens for a penny.
As we all well know, the market is very easily manipulated by big players and we cant do anything about it, so why dont you start to make bounties and received tokens to sell and invest in those alts in that you are interested in and thus you will dont need to invest your money.
Many analysts predict a different bitcoin price and who will be right to guess is impossible, these are all simple guesses, only big players who manipulate the market know what bitcoin price will be tomorrow or the day after, because they dictate their rules in the cryptocurrency market.
I think that the year 2019 is probably the last year when it will be possible to see a big growth in the market if the big players will want to do this, because in 2020 the governments will already regulate cryptocurrency and it will most likely be impossible to manipulate the market anymore.