The antonym for the phrase "putting top of world" can be "hitting rock bottom." While the former signifies reaching the pinnacle of success, the latter means hitting the lowest point in life. When one puts the top of the world, they can bask in the glory of their achievements, success, and accomplishments. However, hitting rock bottom can be discouraging, and one may feel lost, hopeless, or defeated. It is essential to remember that hitting rock bottom does not mean the end; instead, it can be a beginning of a new journey towards self-discovery, growth, and eventually, success. Therefore, it is crucial to keep working hard and persevere through tough times, to achieve one's goals and aspirations.