This is something each person must see in his own mind, and, even more important, in his own heart. This is not something that will come simply by hearing or reading without learning. It will come only as you approach the Lord in His Word, and let His truth enter your thoughts and thus your life. There can be much discussion about how important the various duties of religion are in relation to each other. But there can be no progress made towards a proper conclusion until a person is convinced, within himself, that the Lord is supremely important, and that so also are those things which come from Him.
Regular worship is important.
To partake of the most holy act of worship, the Holy Supper is important. Regular reading and prayer are important. Doctrinal instruction is important, and so is the role of an ordained priesthood in this instruction. All these things are very important indeed, and they are important because the Lord Himself, from whom these things are, is of supreme importance. There will still be limits on what a person can do.