When “too much” means “not good”

Do we understand well, what “do your best” really means?
When we are trying to achieve something and work as hard as possible and really do what is necessary for it, or even more and still not getting closer to reach our goal, then obviously, something is wrong. We may even not see this and think, that everything is ok, until one day. How is that possible?
How is possible to work so hard, do our best and to not see something is going wrong?
When we put too much effort, when we are trying too much, then it’s easy to lose perspective and miss a lot of things happens around us.
For example, I don’t have to write long posts, when the message is clear and understandable.
What for? Is it the point, to get people bored of reading, when it’s too much?
Is it the point to get people tired of you, when you are asking them every time about something, when for them is too much?
Trying too hard, doing too much is a trap!
Take a break, get perspective, find the balance.