The best advice to follow is to see bitcoin as a long term investment vehicle. Ignore all outside noise, FUD & short term price movements. You will not lose money if you buy bitcoin & hold it long term. For any noob, just starting to buy now, it might be hard for you to become rich by buying only bitcoin in the short term but if you buy bitcoin regularly over many years you will be in a good position.

Save bitcoin alongside regular monthly fiat or pension contributions. 20 years of DCA (dollar-cost-averaging) monthly into bitcoin will put you in a nice position to enjoy a comfortable retirement.