Saul/Paul

I was reading the account in Acts concerning Paul and his desire to go into Asia but the Spirit didn't allow him to go. Maybe I have a strange thought process but here is the process of my thoughts. What would the world be like if Paul would have ignored the Spirit and went anyway? Why didn't God want him to preach in Asia? Would my life be different if he had done what he wanted to do? If so, how would it be different? Paul probably had no idea whether this was a major decision or not. Of course, maybe all of Paul's decisions were major. How do my small or insignificant decisions affect my future and those around me, my family.