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That focusing on yourself doesn't mean isolating yourself and doing self-care in time to let yourself become SCP for getting older and having no friends and no problems at all.
Focusing on yourself is about becoming the person who is physically secure, generously worthy of veteranship and when you look around you, whether your friends is here or not, you should be telling about whether you are currently in the right direction in life.
Always keep in mind that the best things in life come from the bonds you build with others, the life you live and how secure the life has always been.