Life truth victory
I'm guessing you pulled this out of an old bible hymnal or something. It means, "I am (sum) the way (via) the truth (veritas) and (y) the life (vita)." Ego is thrown in as an emphasis on the "I" in sum.
California State University's motto is 'Vox Veritas Vita'.
The motto of Tamilnadu Theological Seminary is 'Via, Veritas, Vita'.
Katella High School's motto is 'Vox Veritas Vita'.
Koidu Secondary School's motto is 'Christus Via Veritas Vita'.
The motto of Saint Anthony's Canossian Secondary School is 'Via, Veritas, Vita'.
The motto of Bishop Garcia Diego High School is 'Via, Veritas, Vita'.
Limavady Grammar School's motto is 'Vita, Veritas, Victoria'.
The motto of Glasgow Caledonian University is 'For the common weal'.
The motto of Silverthorn Collegiate Institute is 'Nil Veriteur Veritas'.
Cicero has both via vitae ("way of life") and via vivendi ("way of living"). He also uses modus vitae with this meaning, but this expression is ambiguous and can also mean "term of life" or "limit of life".
"veritas" is Latin for "truth"