Lot of people think that a Shiite would mean Iranian person...
Lot of people think that a Shiite would mean Iranian person which is something not true at all, but people got this impression because supposedly that the modern islamic government in Iran is a Shiite government, although it has different aspects than other sub-Shiite creeds, and the speech about this will take long time and maybe it needs a book for its own sake.
Introduction In the name of God, the Beneficent, the Merciful And prays on the most righteous of His creation, Muhammad and his Household and his mates the honourable and guided (It is) About what concerns a bunch of prophets, and viceroys, in some of their own matters.
(Know) that our believe in prophets, and their viceroys and the Angels (PUT), they are infallible and purified from any impurities and they don't guilt either a big one or a small one, and never refuse the commandments of God and do whatever they are commanded with, and whoever refuse the idea of their infallibility in any situation then he did miss them.
And our believe in them is that they are described with completeness of wisdom and honour and patience and bravery and so on and never described with less aspects in any of their matters.
Then, the prophets and viceroys and the purified Imams and the like before them (PUT), it is doubtless that their times are busy with God and their hearts are full of Him and their minds are connected to the heavens world and always watching for God, for he said (The prophet PUH): worship God as you see Him, so if you don't see Him, He sees you. So, they are always watching, attending toward Him, the Exalted, with their total.
Whatever is apparent in their prays (psalms) and their speeches and their books and the other of their sayings about falling in sin it is just to behave humbly for God and it includes the maximum thankfulness for Him, the Exalted. It is mentioned about our prophet (PUH) that he used to exhaust himself in worshipping, so one of his wives asked him: didn't God forgive you for whatever was made and whatever will be from your sins? So he said to her: Yes, but shouldn't I be a thankful slave?
Until The Holy called him by His call "Ta. Ha. We have not revealed unto thee (Muhammad) this Qur'an that thou shouldst be distressed"(Ta Ha:1-2) meaning not to exhaust yourself and spend the maximum of your power in worshipping.