It's really difficult at first so I'm glad you're thinking about doing these things for yourself
It does get easier. After a while of living alone and not being involved in a "relationship," I discovered I had strengths I never knew I had. And I learned that I loved living alone! The further away I got myself from other people's problems, the faster I realized how some people just create problems for themselves by choosing to continue their bad behavior. And the more peace and serenity that came into my life. Take good care of yourself. List your needs. Discover you.