The/somebody’s scheme of things
Definition 1 of 2
Pro Tip 1/3Personal Importance
Reflects the importance or relevance of something according to a person's beliefs or values. 
In my scheme of things, family always comes first.
Pro Tip 2/3Subjectivity
Highlights that it's a personal rather than universal concept, varying from one individual to another. 
In her scheme of things, success is synonymous with happiness.
Pro Tip 3/3Prioritization
Indicates how someone ranks the importance of different aspects in life or work. 
In the grand scheme of things, small setbacks aren't significant.