I think that we should invest only such amount in bitcoins, which we can easily afford to lose. Risk is always present in all investments, but I want to advise you to invest in the long term.
I completely agree with you. It is important to watch yourself to avoid being reckless. Personally, I think it is bad to put all your money and commit them into multiple investments. It may be better if you put only a fraction of your money so you could still have some for yourself.
It is better to have a point of view if you want to take a risk in investing which you may going to ask yourself if it is really worth it or not. Anyways it is very important to know more than anything about investing Bitcoin is don't risk all the money if you know you can't earn it right away in a single day.