Your safest bet is to HODL until after the next halving (approx May 2020). Again only my opinion, believe that we will see 1 bitcoin at a value of over $50,000 then.
Do your own research though & don’t trade based on what anybody else says. We’ve been in a bear market for around 6 months now, many people are predicting lower prices. If you can HODL for a few years though then now is a cheap time to buy & you’ll almost certainly get good profits if you buy now & wait a few years.
I'll second that. I have Hero status simply on virtue of having signed up and been active here for almost two years. Had I remembered my original account login details from even farther back, I'd likely have been Legendary within months of using Bitcoin in 2016 - that wouldn't have been an accurate reflection of my knowledge then, it's by no means a reflection of the knowledge I possess today!
That said, I guess actively following Bitcoin's price for a long period of time tells the Legendaries that there's benefit to ignoring price movement in the short term. It's taught me, even in my short time, that "all this has happened before and all this will happen again".
As LFC says, it's just been 6 months. We know the market's been in years-long downtrend so we can't dismiss the possibility of another long "winter".