忧虑往往是浪费精力.用英语怎么说？

忧虑往往是浪费精力.

To worry is often to energize needlessly.

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

worry

n. 烦恼，忧虑，担心，撕咬；vi. 担心，焦虑，为…发愁，撕咬；vt. 使烦恼，烦扰，撕咬；

例句
He was only in his mid-thirties, but already worry had aged him.
他虽然只有三十五六岁，但忧虑让他很显老。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

often

adv. 常常，经常，时常，再三；

例句
Genetic abnormalities are more often associated with faults in paternal DNA than in maternal DNA.
相对于母本DNA,基因畸变往往更多地与父本DNA上的缺陷相关。

energize

vt. 加强，给与…以活力，使活跃，[物]给与…能量，给与…电压；

例句
He helped energize and mobilize millions of people around the nation...
他帮助激励和动员了全国数百万人。

needlessly

--

例句
Half a million women die needlessly each year during childbirth.
每年有50万女性难产致死是本可避免的。