It could be a sty or a fat deposit. I suggest you clean it up with organic facial wash to avoid irritation and infection. You can also speak with your health care provider to have accurate diagnosis of the lump.
You should see a doctor or a dermatologist to rule out anything like cancer.
My best gues though is that it's just a fat deposit under your skin. Many of us get them.
If the doctor says it's just fat, then you could have them remove it, or do it yourself at home.