i have no time to waste, no chance to choose, no captial to compare with others.the only way i cando is keeping myself calm down and working hard.有没有语法错误

1.The only thing I can do now is to leave here and become a monk somewhere."
事到如今,我只好出家当和尚了。
2.The only thing one can do with it is to hold it in the arms as it will then remain restful.
只有抱在怀里,才能平安无事。
所以 这句话应该在 the only thing i can do is to keep myself calm down and work hard. 更好

I have no time to waste, on chance to choose from, not enough capital compared with others. Therefore, what I can do now is to calm down and work hard.

要用 ...i can do的话,应该是 the only thing I can do
或者 the only way I can go/choose
动词取决於 only 后面的名词到底是事情还是道路