If someone tells you to "never give up" ... what they are really showing you is how they understand the world. This is what they tell themselves, and now they are telling you.
The entire society wants you to "keep going", "be tough", "get your head down" ... but where is this society going ? Environmental disaster, economic disaster ... it's all a disaster.
So, you would be wise to find a different way of living as you can see this way of living leads to disaster.
"Spiritually-speaking", the goal is awareness, deep vast awareness of you of everything that is happening.
You can build your awareness when you do something strenuous, and you can build your awareness when you relax.
The goal is only to build awareness. More and more. But you must be awake.
Now when people tell you to "get tough", they are just encouraging you to be unconscious as you force things to happen - force yourself through 12 hour days doing something you hate. You can only do this by becoming unconscious. And then having a beer at the end of the day to become more unconscious and forget about the day. It is the opposite of the "spiritual" goal.
Mostly in life people are unconscious. They have to be to keep doing the terrible things people do.
How does a soldier shoot a weapon ? Only one way - by being unconscious inside. And this is the entire basic training of a soldier, to force yourself to do terrible things and fall asleep on the inside. You just run on automatic pilot doing what your superiors tell you to do, no matter who you are killing.
On the other hand people want to go on vacation and lie on a beach drunk on pina coladas. They are just trying to forget themselves and their lives. This isn't relaxation - it is unconsciousness. It is trying to forget about your life.
The "spiritual" goal is to wake up. To remember yourself, your life, your heart in everything you do.
When you breathe in - remember your self.
When you breathe out - remember your self.
I was proud, and I demanded the finest teacher
.. .. and when he appeared
.. .. .. .. I was so small