Ok usually I say to save things because it's useless to mine btc if you have no faith in btc...
But let's get it right, right now it seems logical to sell a big part of it, or at least transform parts of btc in altcoins clearly!
I don't think selling now can be good decision as the price so comparatively low at a moment, its better if we save now and sell after the halving when the price would be better.