I spent most of my time doing research on many altcoins, their old price to the present value and i find out that even if you sell your tokens today leaving few tokens worth few dollars for many years can worth something. For example if you left 9$ worth of bitcoin in your wallet since 2012 you would never have imagine what it will become today, in jan 2017 you can buy 5000 pieces of Ripple at 0.007$ which costs 35$ and in jan 2018 a XRP cost 3$ which turns 15000$, there are many examples like this on CMC, remember Tron too? My point is its bad selling off all your coins, if you needed money that bad always leave coins and tokens worth of few dollars left in your wallet just in case
It is not totally bad to sell all of your coins in your wallet because it is still into your ownership and you are the only one to decide of what you must do to your coins. It will be regretful at some point of time but if you really in need of money and you do not have anything, the call for selling all of those just to sustain your need will be your last resort. But if you can still manage to hold your coins and find another source of income, why not? It is really regretful to sell your coins because we do not know when and what moment of time the price might go up unexpectedly. That is why I am just still into holding my coins and seek another source of income for a while just for me to sustain all my needs because I do really hope so that one day, the market price of the coins I keep for a long period of time will be worthy.