If you describe yourself and your love for your career in one sentence, I think you can write that I will always be loyal to the career I love.

In other words, a person has high loyalty to his career, likes it very much and loves it very much. First of all, this profession is my passion. Secondly, I am very loyal to this profession, which means that I will always like my profession and grow in it.

So I think this sentence is enough to describe my love for my career.