Hair thinning on scalp. Hairthinning!

My age is 22 suffering from hair thinning Didn't seen any hair fall on fingers or comb From childhood i had full of hairs silky and smooth.. But till i reached my 20s i have noticed my scalp is thinning with hairs and it can be seen on wet scalp easily in rain or after shower. But from far away it looks normal When seen on closely it will be noticed.. I dont have any stress or any disease.. Short tempered by nature got angry quicker and calms down May be i over think about my future and studies also about weight loss Although iam fit athletic won many prizes in school for running race cricket khoko all Now my current weight is around 78 to 80 may be it wories little bit My main problem is about hairthinning