Sometimes when a person socialize with others their mood effects him. Each person should create is own atmosphere that he likes and feels cosy while in it, at least few hours before night sleep time. I had been doing this method for a while and it really helps me emotionally and makes me feel happier.
Each person no matter where he is or whats are his thoughts and believes, if he is surrounding himself with negative conversations then he will feel sadness or nerves. I am not saying a person should avoid being with others all the times, but the hours a persons spends in the day are hours that are part of his life, as an example if he wasted hours in his day he is not being productive nor having fun then he is really wasting times (years) of his life
No matter how busy a person is, he, she should always take some few hours a day to take care of himself by himself only. I usually take some time to myself during the day but I really love taking quality time for myself, few hours before I sleep. It helps me to take care of me self ( my ideas and physically ) In that time I release or let go of all the negative ideas and try to improve myself mentally. I feel a person is mentally improving means, a person improve or at least try to improve his life style, he/she feel loved and a person is enjoying his own company.