God guides through Scripture, prayer, wise counsel, and the quiet leading of the Holy Spirit. Most of His will is already revealed; specific decisions are made trusting His care.
A large part of God's will is already clearly revealed in Scripture — to love God and others, live with integrity, and reflect Christ's character — so seeking direction starts there rather than waiting for a special sign. For specific decisions, Scripture models seeking wise counsel, praying for clarity, watching for how God provides or closes doors, and paying attention to the peace or conviction of the Holy Spirit. Trusting God's care means moving forward in faith on decisions that align with biblical wisdom, resting in the confidence that He directs the steps of those who commit their way to Him.
These themes are best read through the whole testimony of Scripture, emphasizing God's self-revelation in Christ, the active ministry of the Holy Spirit, and the restoration of the whole person. Bible study should lead to a changed life, compassionate service, and a clearer picture of God's loving character.