We will attend the functions where we were invited. Such places we may not have many known people. Those places we have to sit and try to observe the function and complete the formalities and come back. Generally, when we attend functions of our neighbours this will happen. There we can meet the host, offer our blessing and take food and come back is the best policy.
It is often said that we should speak where it is wise to speak otherwise it is better to keep quiet because if we still keep talking no matter how wiser our words are they will lose their meaning.
Similarly we shouldn't visit places where we are made feel undesirable and unwanted it not only effect our self esteem but also reduces our self confidence so its better to avoid these situation before getting indulge in them.
"It is hardest thing in the world to be good thinker without being a good self examiner"
I used to be very sensitive in similar situations earlier.I felt myself sorry , desperate and depressed many times initially. But slowly I realised that such things becoming rules and practice rather than exceptions. I also learnt that I am only the loser if I become sensitive. So I started to train myself to make myself comfortable somehow. Now I do not mind even if nobody attends me. I can take care of myself as I am clear why I am there and fulfil that .
The last, less common reason (what the author alludes to) is when you are invited as an obligation and you are in a different social class than the host or you are going through difficult times. On such occasions, I present myself to fulfil the social norms and come off. At these functions or meetings, I feel happy that I've had a chance to interact with people who do not respect basic human values and sentiments. This has helped me to be much more confident about myself, who care if you don't have a kg of Gold or a huge car that stinks of wealth that can change. History is full of such characters.