Present Simple or Continuous

The present continuous to talk about events which are temporary/limited in time and the present simple to talk about events which are habits/permanent.

• I'm thinking about dying my hair brown, but I don't think my wife will be very happy about it.
• I often drive to work but I'm taking the train this morning because my car is in for repair.
• I usually don't drink coffee but I'm having one this morning because there is nothing else.