Obeying God - Say what?

There are times when God seems to work in His mysterious ways, beyond our understanding and imagination. And there are times when God seems to ask us to trust Him, and obey, when taking that giant step of Faith seem like an impossible task. Sometimes we find it hard to give up our control over our lives, and tell God what we want, instead of simply obeying.

The people of Israelites spent the (extra) years wandering in the desert due to their disobedience, and though most of the time when reading the OT, we wonder why were the people of Israelites so dense, as to disobey God when He was so close to them? Yet we do the same thing. After the death and resurrection of Christ, what do we have to fear? And why do we still chase after the things of this world, when we know that Christ, our King, has defeated the king of the worlds?

The daughters from the tribe of Joseph were given a challenge and a command; in order to protect God-given blessing and vision/prize for the tribe, they had to obey the command, which meant they could not marry anyone of their choice. Say what? You mean I can't marry anyone I want to? Given the history of Israelite's disobedience in the past, they could've said that plenty and went out and marry the person of their choice; instead, they decided to obey, for the sake of the tribe and the greater good/vision.

Do I obey God at all times, despite personal sacrifices I have to make? Do I obey God, staying true to the provisions of God? Are we obeying God in all things, as we continue to protect a God-given provision called R.Y.?