Investment requires  determination  and dedication because to have efficient investment you must sacrifice many things and deprive yourself from some luxury lifestyles which many people cannot persever. The major problem some people are having in Bitcoin investment is not just capital but the adequate knowledge of the process and how the system work.
Bitcoin is a digital currency which most of the investors does not have control over the system, so most people that doesn't have the adequate knowledge of it and the orientation are still afraid to make a huge investment in Bitcoin believing it to be a Ponzi scheme that has the tendency of crashing any day  thereby making people to loose their hard earn money.

Everyone has to figure these kinds of matters out for themselves, which is part of the reason that we are still early because a lot of folks are going to end up coming into bitcoin way later than they should have come in.. . and so yeah, one of the better things to do is just to get started with some small investment amount and to figure it out as they go.. otherwise, these kinds of newbies are going to continue to feel that they are late and they will still end up having to get started at a BTC price that is likely to be much higher than it is right now since the BTC price is likely to just keep going up, so these guys who are waiting and/or trying to overthink the matter (or refusing to take action and/or to get involved) are going to end up being worse off by their continuing to wait and continuing to conclude that they don't know enough about bitcoin.