Often, people confuse being there for others with not minding your business. There is nothing wrong with being a good friend, family member, or coworker. However, that does not mean sticking your nose in places that it doesn't belong. Often, people are unable to draw the line between being considerate and caring versus being nosy and intrusive. Mastering the balance between these few characteristics are key distinctions between someone who has your best interest versus someone who only wants knowledge about you for their gain.
In the age of social media, it becomes easy to be too invested in knowing what others are doing. Hell, that's the entire point in having it. However, this has also crippled the communication skills amongst adults old and young. Aside from this, people tend to relate what they see online to how that person is doing. For example, if the girl who sits across from you in organic chem tweeted, "wow, I hate it here," don't immediately assume that she hates it there. Sis could simply be upset that her favorite gelato melted and she has to make another store run (it's me. I'm sis). Rather than making an assumption, simply mind your business and proceed forward. Knowing when to speak up and when to simply keep your mouth closed.
Aside from this, most people who simply want to know your business only seem to check on you when things are going wrong. Rather than congratulating you when they see some sort of positive activity going on in your life, they only show up in times of hardship. In doing this, they don't truly care about you. They simply want to know what is going on in your personal life to make them feel better about themselves. Because in today's society, it would be deemed a travesty to simply move forward and not compare one another's success.
Rather than applaud at others, misery and tribulations, wish them well, whether it be from a personal standpoint. Minding your business at the appropriate time could say endless amounts of stress in all aspects of life. Never forget: we are all running the same race, just at different paces. What has happened to one person can also happen to you. Thus, wish people well wholeheartedly and genuinely because you never know when you will need a true and genuine friend in your corner.