Behind the big finances there is a big risk, so every thing we do must have risks, so if you intend to get a profit you have to dare to face the risks that are in front of you, if you avoid it then you will never be able to move forward, there is no such thing as a safe zone when doing some investment because some things can happen in a short time, you should take the time to observe any changes that occur and take steps to overcome it
As for me we need not to risk all the funds that we had in order to gain the huge profit that we aimed for. We can just start in a small investments, and eventually you'll be able to see the positive effect on that. Not all risk could bring such profit, some of them weren't able to recover its own capital and worst a failure of expectations.