Can't stand seeing others succeed, and in the end, it's really yourself who suffers.

If you keep staring at others every day, your mind will be filled with jealousy, resentment, and dissatisfaction, making life difficult to enjoy. Whether others are doing well or not often has little to do with you; the real thing that traps you is your own emotions.
Conversely, if you genuinely wish for others to be well, it shows that your heart is relaxed, stable, and not conflicted. People like that usually won't have a bad path ahead. Not because blessing others will make you rich, but because when your mindset is right, everything will become smoother for you.
People who harbor malice in their hearts usually don't have a very comfortable life; those who carry kindness often won't have bad luck either.