Vous avez cherché: if it is to be, it is up to me (Anglais - Latin)

if it is to be it is up to me
si enim mihi est

if it's meant to be, it will be
si esse esse, illo

it is okay not to be okay
suus 'okay ad non esse bene "

and it is unlawful, nor is it to be able to think,
nec fas est, nec posse reor

if its meant to be it will be
si suum destinatum est

if it is not broken, do not fix it
si non confectus, non reficiat

to others if it is lawful to you
aliis si licet tibi non licet

it is impossible for a deed to be undone
factum fieri infectum non potest

it is sweet to be unwise in a place
dulce est desipere in loco

it is right to be taught by the enemy.
fas est ab hoste doceri

if it is a hot day, cornelia wants to err on wood
marce, cur tu ex hoto venire times?

if it is not in writing, it doesn't exist.
non scriptum, non est

if it is god who works in you
si deus est qui operatur in vobis

for whether we be beside ourselves, it is to god: or whether we be sober, it is for your cause.
sive enim mente excedimus deo sive sobrii sumus vobi

it is better to be a lion for one day than a sheep forever
melius leonem unum diem quam ovem in aeternum esse est

amelia syram to task if it is idled.
aurelia syram reprehendit, si ignava est.

and if it be eaten at all on the third day, it is abominable; it shall not be accepted.
si quis post biduum comederit ex ea profanus erit et impietatis reu

i am able to go, if it is well with you, you are well
si vos valetis, bene est, ego valeo

"i must escape" or more literally "for me, it is to be escaped"
mihi effugiendum est