I am a Mechanical Project Engineer.
It is both challenging and rewarding.
You will work a minimum 10 hr day with some all nighters thrown in for good measure, as well as weekends and some holidays. You will not get overtime pay.
Some people with respect you, some will envy you, some will hate you. That'* life. Get over it.
You get out of it what you put into it.
You never stop learning. You shouldn't get bored.
School doesn't teach you anything except how to learn.
You will be so busy that time will warp and the days, weeks, months and years will fly by.
I don't really know where the last 26 years of my career have gone.....into my autos, home and family.
Unlike Bill, I don't drink coffee or smoke nicotine.....that helps a bit.
If you really want to make money, work for yourself, if you have any entreprenerial desires. If not, you will only make company shareholders rich and they will let you go when you're 55 whether you want to or not.