Get your beauty sleep.
Treat your allergies.
Fix nasal congestion.
Eat well.
Examine your smoking habit and decide to quit.
Relax.
Accept what you can't change.
Proper diet is necessary for healthy skin. You should add green vegetables in your diet,salad like cucumber, tomato etc
To remove dark circle rub potato on your dark-circle and put it for half an hour. Do it daily.
Get your beauty sleep.
Treat your allergies.
Fix nasal congestion.
Eat well.
Examine your smoking habit and decide to quit.
Relax.
Accept what you can't change.
Put cucumber on eyes for at least 3, hours you can do it while sleeping it will help you. Plus take care of your diet, drink plenty of milk andn eat a lot of fruits. Surely these things will help.
Keep your diet better to avoid this problem.