说完了职业那部分，别忘了再解释一下为什么自己会be good at，除了跟自己的兴趣爱好吻合，也可以是因为自己有这方面的talent呀之类的。
I’m confident that I would be an excellent programmer with decent payment in the future.
I’m a complete technophile, I’ve always been fascinated by technological stuff like computers, Internet, smart phones, especially apps and software.
The modern world is made up of various programs. It’s fair to say everything in every aspect of our lives has been computerized to some extent. It’s already become an indispensible part of our daily life.
It’s not my major in college, but as a computer nut, I fancy myself as a self-taught expert. And I’m a quick study, I bought self-study materials and watch tutorials online, and I just got the hang of it pretty soon. And now I’ve had a good command of the knowledge needed to be a qualified programmer.
And I know for a fact that all the programmers are well paid. The demand is high for this job, I mean, our society needs people like us to create somethingnew and entertaining, to facilitate people’s daily life and bring more joy and recreational activities for people.
I know many people who have changed their major and started to work in this area. So it’s fair to say it’s a promising career with great job prospects.
decent = of a good enough standard or quality例如：
a decent meal/ job/ place to live
I need a decent night’s sleep.
technophile = a person who is enthusiastic about new technology
indispensible = too important to be without例如：
Cars have become an indispensable part of our lives.
She made herself indispensable to the department.
nut = a person who is extremely interested in a particular subject, activity, etc.例如：a fitness/ tennis/ computer, etc. nut
fancy oneself as = to like the idea of being something or to believe, often wrongly, that you are something例如：
She fancies herself (as) a serious actress.
self-taught = having learned something by reading books, etc, rather than by somebody teaching you例如：
a self-taught artist
quick study = fast / quick learner = learn quickly
get the hang of it = to learn how to do or to use something; to understand something例如：
It’s not difficult once you get the hang of it.
I can’t seem to get the hang of this game.
I never got the hang of negative numbers.
I know for a fact that = I’m certain that …