Selling your bitcoin in order to invest in something else to me, is not advisable, considering the general situation, especially the coming of the bitcoin halving. The price of bitcoin will rise again and possibly go above $69000 and more, so there is  hope of making good profit at the end of the day. Unless if you need fund for very important and beneficial project, then you can sell a little reasonable and suitable amount, if not, l suggest you still hold on.