Passion for Christ?

Most of the time i wonder to myself..why most of the people (christians) they have like such high/great passion for Christ that lasts for a lifetime but why dont i have it?I reli wan to have that passion for Him..tat passion to serve Him,tat passion to do/participate in watever events tat have to do with Christ n help the church maybe or even have the passion to go for missions to glorify His name to other people..The fact is i got tat passion but it will never lasts..it will only last like for 1week or so mayb 2weeks(max) and after that the passion for Christ will be like *poof* gone..forgotten..i dunno but i gotta change all these..like a wise man once said 'it takes a kid to make up a mess but it takes a man to clear it up'....all those mess tat i've done in my lifr i gotta clear it up before i can glorify Him n serve Him with all my heart or maybe feel His never ending love..as far as i know i gotta man up n when i am den my passion fot Him will burn and will not extinguished..hmmmm tis is seriously something tat u gotta put as my priority in my life..orite tats all for now xD