I think I suck at being a father.觉得我这爸爸做得很失败
sick at很不愉快的； 懊丧的
He was very sick at failing in the examination.
他对于考试不及格觉得很沮丧。
She left her home reluctantly and sick at heart.
她依依不舍地离开了家，心情很沉重。

What are you talking about?你在说什么呢?
talk about讨论
We can talk about this matter in private.
我们只能私下谈论这个话题。
We have common topics to talk about.
我们有共同的话题可谈。

You walk into the room, and she lights up.你一走进房间 她就会很开心
light up（使）容光焕发，（使）面露喜色
Let us light up the world with our brainchild!
让我们的色彩为世间增添欢笑。
A rare smile lit up his stern features.
他那难得一见的微笑在他死板的脸上平添一些生气。