Перевидите пожалуйста на английский

Если ты будешь много работать, то обязательно добьешься успеха - If you work hard, you'll certainly achieve success (you'll certainly succeed.)
Мне понадобится немного везения - I'll need a bit (a little) luck.
Хорошее образование поможет тебе получить интересную работу - Good education will help you to get an interesting job.
не считай себя неудачником, попытайся сделать еще раз - Don't consider yourself (to be) a looser(= a failure), try to do it once more.
Его брат - многообещающий ученый - His brother is a promising (far reaching) scientist.
Вряд ли моя подруга чего-либо добьется. У нее очень низкая самооценка - My girl-friend will hardly achieve anything. (My girl-friend is unlikely to achieve anything.) Her self-assessment (self-evaluation, self-esteem) is very low.
Если вы хотите стать актером, вам нужно верить в себя - If you want to become an actor, you need to be sure of yourself (you need to be self-assured (self-confident.)

If you are going to work hard, make sure you will succeed
I will need a little luck
A good education will help you get an interesting job
do not consider yourself a failure, try to do it again
His brother - a promising scientist
It is unlikely that my girlfriend will achieve anything. She has a very low self-esteem
If you want to become an actor, you have to believe in yourself

If you work much you will necessarily become successful
It is required to me of a few luck
Good education will help you to get interesting job
Don't consider itself as the loser, try to make once again
His brother - the promising scientist
Hardly my girlfriend will achieve something. At it very low self-estimation
If you wish to become the actor, you need to be believed in yourselves

If you are going to work hard, make sure you will succeed
I need a little luck
A good education will help you get an interesting job
do not consider yourself a failure, try to do it again
His brother - a promising scientist
It is unlikely that my girlfriend will achieve anything. She has a very low self-esteem
If you want to become an actor, you have to believe in yourself