@Edina,
Nothing ventured, nothing gained.
Nihil temptatum, nihil adeptum is the literal translation.
(The Romans would have said:
Audaces fortuna iuvat -- Fortune favors the brave)
Good thing come to those who wait.
Ad expectantes bona adveniunt.
We must let go to live on.
Dimittere oportet est nobis ut porro vivamus.
Nos must amotto vivo en.
You must have gotten this from one of those automated translators.
Nos = We
must = must (the translator just left the English word in place)
amotto = you must mean "amitto", "I send away"
vivo = I live
en = Did you mean "in'?