For sure everybody will be recommending trading here and gambling for sure. So instead of telling you what you should do, I'll just tell you what not to do. Don't do the following:
1. Invest in hyips! (those that promise more than 1% a day? those are all fake! It's just a ponzi!)
2. Don't invest on those systematic/strategy/whatever gambling methods. (You won't profit from gambling. PERIOD.)
3. Don't trade, if you don't know what you are doing.
Best thing, probably, is just invest in casinos its quite safe and not much work to do. Just don't expect to double your money in an instant.
That is the big issue of many threads on bitcointalk.org, because way too many people are giving bad advices, that the best investments is to play dice with some "special" strategy or to put your money into new hyips.
Indeed, it is possible to make money from HYIP, but it is extremely risky, unless you join it for a very short time, which is not even worth it in most cases. Also, it is possible to make money with gambling, but all that strategies are worth nothing, because it is still all about luck and the bankroll. You still lose on long-term.
It is simply not worth it to listen such an advices.
Just don't mention it already! Stop mentioning you can profit from HYIP and gambling! You are actually advising them to continue investing in HYIPs and gambling strategy! It is not profitable, if you did profit it is for sure an isolated case. Basically, just say no to those recommendations to profit. It is not profitable in any way.