I do proper research before investing in any project and then hold that for long term.
This is working good for me till now.
research is very much needed in starting to invest in crypto currencies and of course the risks obtained also we know very big maybe by knowing the risks we can be smarter in investing with crypto currencies
For me in 2019, the most important thing for risk reduction is investing in the most liquid coins. Such as: Dash, Litecoin, Zcash.