I really do sick and tired of getting sick and tired every time a cold winter coming.. Heelllppp meee pleaseee!!!

YES.., i'm serious, every winter im down.. literally.. cannot stand up, too much headache, cough, runny nose, blocked nose, and temperature..
some say singing boost my immunity... really.. Im hardly breathing between cough, let alone singing.. and some say, laugh will boost the immunity system... hmmm i donk know about this one.. my life is too depressing..
what do i do people...? hellllppp