I recently put everything back into Bitcoin. It was difficult to let go of Ethereum and Bitcoin Cash, but I think it will do better invested in Bitcoin. I let go of several other alt coins but retained Monero.
For me it is not that good to just follow bitcoin and believe that only this project will make better price in future, for me the best solution is to find like 4/5 coins and follow their trends/ news and maybe in future put some money in them.
Why expect the future, if today there are very good chances for investing in cheap coins? You can use the current situation in the market to make quality purchases that will bring profit in the future.