[someone's] view of life

Translations
чей-либо взгляд на жизнь
His view of life is quite optimistic despite the challenges.
Его взгляд на жизнь довольно оптимистичен, несмотря на трудности.
Definitions
A person's overall perspective, attitude, or philosophy regarding life, including their beliefs, values, and approach to living and understanding the world.