Is there any way I can make my hairline go back to how it originally was?

Over-plucking of hairs causes a hair loss condition known as traction alopecia. When caught early, it is possible for this hair loss to be reversed. During a hair restoration consult, you can explore your hair loss reversal options such as medication, PRP therapy, laser therapy, and more. If you have been plucking for some time, it is possible the hair loss is permanent. If that’s the case, you may be a candidate for hair transplant surgery. I recommend you meet with a hair transplant surgeon in your area for an in-person consultation to explore all of your options. 

This needs an in-person evaluation. I  recommend getting a formal evaluation with a hair loss expert to go over your condition and advise you on best treatment options and shampoo recommendations. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer

Repeated plucking can lead to loss of hair follicles.  This may also be due to or combined with ongoing genetic hair loss.  I suggest an in-person evaluation by a hair transplant surgeon for examination and discussion of options. 

Hair plucking damages hairs. It can lead to inflammation and sometimes even scarring. If it's done once or twice it usually grows back without any problems. However, if it's done repeatedly, it often won't all grow back. The inflammation and scarring prevents full regrowth. See a dermatologist if you're worried. There are options to try to drive the hairs towards growth and try to block inflammation. Steroid injections, minoxidil, and a few other things can be attempted - it can help a bit but never fully if there has been chronic pulling. 

Constant plucking will produce traction alopecia. If you messed up your hairline, you should be examined and then consider a hair transplant solution for it