Once you start stepping into another part it's mean you've already made the decision but whether your decision is right or wrong, we don't know. In this phrase just wanna tell you to be very careful before making any decision on every single thing. Example, marriage! Some people take many years of time to get understanding about his/her partner because it's about future. No one want to divorce after a short time of marriage. So again, please be careful while making any decision because it your future! Remember that no sorry after decision is made. In Khmer means
"ការសំរេចចិត្តរបស់អ្នកគឺជាអនាគតរបស់អ្នក"
Please share your comment if you have any other idea to explain on this phrase.