I want to take my BTC investment to another level,so which of this wallet's listed bellow we serve me for a life time,that even my wife or children can access,if it goes other wice.
Software wallet
Hardware wallet
Centralize exchange wallet
Paper wallet
One thing you are forbidden to do at the beginning is to never keep your Bitcoin holdings on a central exchange. The control of the central exchange is completely dependent on a third party and if for some reason the central exchange gets hacked, you will lose your Bitcoin holdings forever.
However, if you are thinking of holding for the long term, then of course you can decide to use a hardware wallet. In this case, by using a hardware wallet, you will be in complete control of the crypto you are holding. And it will not be in an undesirable situation like being hacked.