I think we all want to believe what we believe. I also think we all do everything in our power to do what we really want to do and just whine about the other stuff that we say we want to do. What do you think?
Not necessarily. You may really want to do somethings but your lack of resources (ie money), lack of time, poor health or poor mental health, etc. create(s) barriers and make doing said things nearly impossible. It does not mean you may not want to do said things, but being realistic, obstacles and life get in the way, so we gotta settle.
The second part yes. The first part no. Thought and belief are cost free, and can therefore be kept pure and true, as long as we are grown up enough to accept our failings.
I may be lazy, but I do not have to justify laziness to myself, I can accept that I would be a better person if I worked harder.
That is the big difference between the imature religious thought system, where truth is that which justifies me in what I want. And the rationalist mature thinking, at the core of science and secular philosophy where truth is to be sought no mater how much I do not like it.