That's not a good idea. While it's good sell some Bitcoin, you have to leave some other purposes. Don't be flat
Yeah it's not a good idea, if you sell a few percent of the bitcoin you have it's not a problem and leaves a few percent for long-term investment, or if you sell because of a good price and buy it again when the price is low. but if you sell all your bitcoin because you will stop investing it is the worst idea..