A busy and active person is never lonely. While on work, you are with colleagues, clients/ customers and busy with work. Books are the best companions. It is possible someone is lonely at home. Cultivating hobbies like music, reading books, surfingon net will drive away lonliness. Lack of communication with family and friends also brings lonliness. It is a good idea to talk on phone with one relative or friend on a day.
Loneliness sometimes take you to very sad....so it`s always better to avoid such situation by reading books,going out,watching movies,playing games.....
Lonliness is more an attitude of mind than actual isolation. When you are alone in office or home, but do not feel frustration, you are not lonely. Even in a crowd, you may feel lonely if you are mentally cut off from rest of world. A person facing loneliness feels insecure. Such persons need sympathy and care from near ones.