I was raised in a strict Irish Catholic environment and was taught that others were more important and should always be put first- their wants, needs, and feelings. I formally rejected this at 13 but it has stayed with me all my life.
I read the Bible sometimes and while it’s a lot different that I was taught- it’s not all harsh and negative- it has a lot of harsh and difficult stuff in it. The core of hardline Christianity- which includes Baptists and traditional evangelicals as well as Catholics, but not the upper or middle class Protestant denominations- is in the Sermon on the Mount, Matthew 5 through 7, which starts with the Beatitudes and continues as one long statement. Highlights of this are- bad thoughts (sexual or violent) are the same as bad actions, no divorce is permissible, passively accept violence, pray for and love your enemies, do not judge others, few find salvation.
So, is it ok to value yourself? Or is self-love sinful? There is a lot of debate on what exactly this all means, but I have neither the sophistication nor the inclination to try to figure it all out. I have to value myself, to value myself more than I value others, for my happiness, well-being and functioning.