If you have it in mind to hold your coin, you can, as many as you can, take the access key away from your reach where you will need to rethink each time you want to spend it and leave only your watch-only wallet in your device so that it will be easier for you to monitor and fund if you want to.
Holding your coin for a long term requires a lot of determination and you can only achieve that if you make plans and have back up plans for funds that can be used to take care of emergency needs when they arise you don't necessarily need to keep your access key away from you when you can misplace it if it stays long before accessing it. You can hold your coin for a long term without selling from it all you need is to have the mind of a holdler which is the buying mindset and not touching when it is not needed.
The mind of a hodler is the key to long-term holding, and anyone who doesn’t have a good-paying job is not even supposed to be talking about holding. Those unforeseen circumstances that will come when you least expect them can make you spend your holding without thinking twice about them if it appears that it’s the only source of money that can reach that moment.
Safekeeping your key and keeping it close to you is also a personal decision depending on what the person thinks is best to help hold for the long term; that’s what they are going to do. Every option has its own merit and demerit.