My tip is to think logically, and check everything 10 times if you are doing something. It is easy to lose your coins if you are not focused. For a example if you are sending funds check the wallet address of the receiver more than 2 times.
Yeah you are right and especially before investing in crypto because investing in crypto means that you are giving the keys of your wallet to anonymous person and if there is any problem, you cannot claim your money. It can be hacked; you can forget your wallet address and so many other hazards. So it is better to think 100 times before going into cryptocurrency investment.