这是一个祈使句，be greedy for是固定搭配，意为“对……贪婪/贪求”，语气坚定，具有警示作用。
I knelt by the wall, with rice grains still on my face, hearing my mother roar behind me like a lion: “If you don’t have the head for it, don’t wear the hat!” I was stunned (I lost my motorcycle, not a hat!), and then heard her roar even louder: “If you hadn’t modified that motorcycle or been so flashy, why would he steal yours when there are so many other bikes on the street?”
It was a night when my ears were ringing and my legs ached. I stared at the white walls. This was the house my parents had worked so hard to buy for themselves. I knew that after taking on a mortgage, it was already very difficult for them to force themselves to buy that car for me, yet I had spent so much money modifying it… I gazed at the grayish-white walls, feeling as if they were covered with my regrets…
I thought I had understood this lesson when I was very young. As a child who was proud of my leg elasticity and loved jumping to grab things, I was scolded by my mother countless times before I finally learned: do not use the jumping method to grab things.
It was only then that I truly understood…
Ever since, I have always kept that lesson in mind.
The best way to move forward in life is to be grounded. Do not be greedy for speed or gain. Do not use the jumping method to forcibly seize what is beyond your reach.
我跪在墙边，脸上还沾着饭粒，听见母亲在身后如狮子般怒吼：“没那个头，就不要戴那个帽子！”我愣了一下（我丢掉的是摩托车啊，怎么是帽子？），随即又听到母亲更大的怒吼：“如果你不改装那台摩托车，不表现得那么高调，街上那么多摩托车他不偷，干嘛偏偷你的！”
那是我一整个夜晚耳膜嗡嗡作响、双腿酸痛的时刻。我凝视着白色的墙壁，这是父母好不容易才买下的属于自己的房子。我知道，父母在背负贷款的压力下，还要咬牙为我买那台车，已经非常不容易了，而我却在那台车上花费了那么多钱……我盯着灰白的墙壁，仿佛上面写满了我的后悔……
我曾以为自己在很小的时候就明白了这个道理：一个自恃双腿弹性好、很爱跳高拿东西的小孩，被妈妈骂了无数次，才终于学会：不要用跳的方式拿东西。
那一刻，我才真正懂了……
后来的我总是谨记着那个道理。
人生前进最好的办法就是脚踏实地，不要贪快、不要贪心，不要用跳的方式，去强拿你奋力所摸不到的东西。
"We shouldn't rush life for all the answers; sometimes, we need a little patience."
"Study hard, change your destiny with knowledge, and achieve your life goals with excellent grades"
"Let others do as they please; do not waste your emotions on things that are not worth it."
"If you can discipline yourself, difficulties cannot stop you."
"Cultivate the habit of keeping a regular schedule."