Of course any investment have risks, but if you know how to invest, you can reduce the risk. Even hold coins in cold storage is investment where you can lost it's value when bitcoin price dropped.
HYIP & gambling is very dangerous, while trading & become investor in gambling sites could be great if he knows how to trading/can trust that gambling website.

Ethereum looks like have good future, but i think it's future won't be as good as bitcoin future though.

10 BTC is a pretty good amount to hold long term, but I will still try to aim for the magic 21 BTC number just for the sake of it. Try to keep buying monthly if you have some extra money after being paid at the end of the month (I assume you've got a job).

KEEP them until after the halving, AT LEAST! Once halving is done, you'll see what you have then. It is said to be worth more

than what it is now. Don't spend any if you can avoid to spend any. Just keep mining and you'd just have more.

Really? You just sell all your's bitcoin. Cause the price is so good now.

I have finished my mining investment, in 3 years i accumulated 10 btc, but now, i not have idea what make...suggestion?
I not need urgent to money then, i want invest yet, but where??
Price cloud mining is too high,difficulty hashing is too high (now 103,880,340,815.4560), gambling i'm not able, what do you make with mi bitcoin?