confident and sure of oneself
уверенный в себе (uverenniy v sebe)
"She walked into the room looking calm and self-assured."
"Она вошла в комнату, выглядела спокойной и уверенной в себе." (Ona voshla v komnatu, viglyadela spokoynoy i uverennoi v sebe.)
to achieve something one has long desired
to solve a problem through programming skills
having lived a long and fulfilling life
a person who is generous and caring
the future will reveal the outcome
to present a situation in a particular way