take a load off one's mind :放下心
The good news have take a load off my mind.
听了这个好消息我就放心了
take a load off someone's mind :解除某人思想负担,使某人宽心
It’s a big load off my mind to hear you say that.
听你这么说,我就大大放心了.
take a load of one's feet :[口语] 躺下；坐下；休息
Take a load off your feet and look over this treasurer's report with me.
坐下来和我一起看看这份会计报告