缺乏动力

back to the drawing board───重新开始；失败后另起炉灶；重来一次

back to the drawing boards───回到画板上

in the driving seat───驾驭，掌握控制权

lack the ability to───缺乏能力

go back to the drawing board───从头做起

to be in the driving seat───坐在驾驶座上

backseat driving───后座驱动