When we first came, most of us used to miss some of our prayers. However, we are all praying regularly now. Sometimes we find it difficult to go to the mosque for congregational prayer and we offer prayer in congregation at home or in the office.
Some people suggest that our prayer is invalid.
It is definitely better if you offer your obligatory prayers with a congregation in a mosque. Congregational prayers are offered in the mosque shortly after they are due, then prayer in the mosque with the congregation is far better than any other place. However, every one of us works within the constraints of his own circumstances. Allah has not made it obligatory that we pray any prayer at any particular moment or in a particular place. He has given us a range of time for each prayer.