You should keep your crypto across MULTIPLE EXCHANGES and MULTIPLE WALLETS

I think it's common advice here to avoid holding funds on exchanges and instead to self-custody your crypto in hardware wallets. While I don't think this is necessarily bad advice, I think that most people should not keep ALL their crypto in self-custody.

To put it frankly, you can and probably will fuck up eventually. On this sub, it's common to see people get their software and even hardware wallets drained of funds due to seemingly small mistakes such as approving transactions without properly reading through them, or downloading fake copies of software because they were the first result on Google. You may think you're observant enough to avoid these pitfalls, but as humans we all make mistakes, and one mistake is all it takes to lose everything if you have all your funds in one wallet.

To reduce the damage that occurs if you mess up, you should spread your crypto holdings across multiple platforms. Keep them in multiple exchanges and multiple software and hardware wallets. If one platform gets compromised, you won't have lost everything. Make sure your seed phrases, passwords etc. are kept in multiple locations, so if one location is compromised, the intruder will not be able to access all your funds.