I need help with a Latin translation issue. Do not need a link to a translator.?

Okay.. so basically I'm looking for the most correct translation of the phrase "I persevere so that I may flourish." The cleanest translation I've found is modifying it to "I persevere to allow me to flourish," which is coming out for me as "ego persevero permitto mihi vigeo." Advice? Also, a) what are and b) how important is capitalization in this phrase? Any and all help is appreciated!