However, you'll be hard pressed to find success even if you have the most sunny optimism if you don't focus in with some hard work, build your knowledge, plan for what you want, and build other foundational pieces of success.
然而,如果你不急中精力努力工作,建立知识体系,做好人生规划,储备其他基本的成功条件,即使你有最乐观的心态,也很难成功.
be hard-pressed to do sth:很难(做某事)
You would be hard-pressed to find a better secretary.
找一位更好的秘书很难.
While it's useful to reflect on them a bit, it's not healthy to dwell on them.
该句式使用while it's...,it's not...表示强烈的对比效应,肯定前半句的同时否定后半句.如果在演讲中使用该句式可以使演讲者增强语气,表达强烈的感情.dwell on意为"念念不忘,详述".
So you made a mistake, but there's no need to dwell on it.
你是错了,不过不必老是想着这事儿.
Make a list of all of your regular coworkers and contacts and list a few positive attributes about each one – their knowledge, their insight, their communication skills, their logical skills, and so on.
该句使用破折号表示举例说明.作者并没有使用类似such as这样的短语来举例,其目的是引起读者的关注. 所以在英语写作中,建议使用特殊的符号来起到强调作用,效果会更好.