after 22 years it is difficult to increase in height as by this time epiphysial fusion will be completed.
you don't bother about height because external features will be decided by genes, we can't change them and no need to change also.
concentrate on things which are in your hand and as your are a good student, study well and achievement will give you the power to overcome the inferiority complex
as age progresses no one will bother about your physical appearance, only your intelligence and success will be counted.
as we love our parents and family members without concerning their physical appearance like that only true love will not change with external features.