Thank you for sharing your dream with us. Please take everything that I share to the Holy Spirit as He Alone gives the accurate interpretation.
You will be faced with something from your past (could be a person or an issue) that might threaten or have the potential for you to compromise your purity or walk in the holiness of God in some respect. Don’t yield to it and you will be successful. However, along the journey you will be faced by an obstacle, but you will overcome it in Jesus’s Almighty Name. There will be some sort of celebration with your colleagues and they might assist/encourage/refresh you and the next thing for you joining a ministry or some big group that might be deemed “slow” moving but has great potential and will be powerful, but will get you to your destiny.