I highly recommend the book, "Decision Making and the Will of God: A Biblical Alternative to the Traditional View." It talks about this very thing. He even uses the college dilemma as an example. The basic gist is that if you have a morally neutral decision, you are free to choose what you want, and God's sovereignty works through that. He gives a lot more explanation with Biblical principles and how to know how to find God's will. https://www.amazon.com/Decision-Making-Will-God-Alternative-ebook/dp/B002RLBKEA
I highly recommend the book, "Decision Making and the Will of God: A Biblical Alternative to the Traditional View." It talks about this very thing. He even uses the college dilemma as an example. The basic gist is that if you have a morally neutral decision, you are free to choose what you want, and God's sovereignty works through that. He gives a lot more explanation with Biblical principles and how to know how to find God's will. https://www.amazon.com/Decision-Making-Will-God-Alternative-ebook/dp/B002RLBKEA
I recommend the book, "Decision Making and the Will of God." https://www.amazon.com/Decision-Making-Will-God-Alternative-ebook/dp/B002RLBKEA
Roadblocks in and of themselves don't necessarily mean that God doesn't want you to do something. It could be Satan trying to hinder you. It could be trials that God is using in your life. It could be that God's timing is different than yours. You want to complete the program in a certain timeframe but God has something different in mind.
When deciding if something is God's will, you have to to look at your goal and measure that specifically against what scripture says. Is this goal honoring to God? Does it break any Biblical principles?
If the goal does not break any Biblical commands or principles, then you are free in Christ to pursue it. If God doesn't want this goal to happen, he will make sure that it doesn't.
This is where you need to pray about it and rely on the Holy Spirit to guide you. But I definitely recommend that book because he goes into much more detail.
> what I should do as a follower of Jesus Christ who wants to do the will of God, where should I focus on in the Bible?
You can start by looking at the verses that are specifically about the will of God, many of them listed on this page.
The top three that I immediately thought of were:
1 Thessalonians 4:3: "For this is the will of God, your sanctification: that you abstain from sexual immorality"
1 Thessalonians 5:18: "Give thanks in all circumstances; for this is the will of God in Christ Jesus for you."
Micah 6:8: "He has told you, O man, what is good; and what does the Lord require of you but to do justice, and to love kindness, and to walk humbly with your God?"
So start thinking about how to do those in your daily and weekly life.
P.S. About how the will of God relates to an individual's choices during the path of his life, I recommend the book "Decision Making And The Will Of God" by Friesen and Maxson.