Well, you know, and I kinda feel like I've been finding my groove on the show.
find one's groove 找到了节奏；进入了最佳状态；某些语境下就可以翻译成：做XX已经游刃有余
groove有一个含义是：a particular type of musical rhythm （某种）音乐节奏，比如：a jazz groove 爵士乐节奏。那么，find one's groove就可以理解成找到了某人的工作；生活...节奏，进入了最佳状态。
所以，以后我们不要再用be good at...表达XX做得好这个含义啦。
例句1：
It's perfectly normal for a new relationship to need time to find its, uh, its groove.
对于一段新感情来说 需要一段时间来进入最佳状态是很正常的。
例句2：
Now, maybe he didn't play spoiler in it, but he still stayed on track and found his groove, a driving force to be reckoned with.
虽然他的比赛没有悬念，但他仍然在轨道上并且找到了自己的位置，这是一种应该加以考虑的驱动力量。
例句3：
Our team had really found its groove.
我们队终于找到最好的状态了。
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