Somewhat off-topic, but the sentence itself is a bit unusual. I would have used "robbed OF" rather than "robbed FROM." E.g.: He was robbed at gunpoint OF his iPhone. not: He was robbed at gunpoint FROM his iPhone.

The quote means that when you set a goal. Then challenges or issues (obstacles) start to block you from reaching that goal. And that most people allow these challenges to stop them from reaching the goal and stop them from living the life they really want.

"Obstacles" = "challenges" in this example. The unnecessary switch of word only serves to confuse. Then "rob them of" would be much better than "rob them from", which is not really good English. So the meaning, more or less : person sets goal - obstacles appear that make the goal hard to reach - person notices those obstacles - person gives up goal because the obstacles make it too hard to reach - person does not achieve goal - person gives up the dreamed-for life, the goal, because of her reaction to the obstacles.

Hola que tal ?

No. It means “most people don’t achieve the life they want because they let these challenges prevent it” For example, someone may want to graduate college, but they aren’t good at school so they give up and never graduate college. Hope this helps!