welcome to H C M
as you wrote,it shows the negative attitude of you to words life.please have positive attitude to words life,it will help you in curing the changes you have in yours body.these are normal wear & tear of body.the every one on this earth suffers with,you are not the only one to face it.the best remedy is --physiotherapy
,please start at physio center as early as you can, along with analgesics,,nerve
tonics,,& mild muscle relaxant
..these will help you a lot,for knee add food suppliments drugs with wax bath physio,& exercises.
dr s k gupta