Do I need a chin implant?

A formal evaluation would be needed to determine what's best. Many of my patients try to avoid surgery, so we perform a non-surgical chin augmentation treatment with injectable fillers. Fillers like Radiesse as well as Sculptra are injected into the area, improving the overall appearance of the lower face and balancing the jaw and lip harmony. We use cannula injections to meticulously contour and project the chin, soften the chin along the jawline and improve the chin crease.
Implants are still a great option once you are 100% positive that you are ready for a permanent enhancement. I suggest getting a consultation with an experienced cosmetic dermatologist and facial sculpting expert; our practice is located right here in Los Angeles. Best, Dr. Emer

Hello, thank you for your question. An in-person examination is needed, I recommend you to schedule a consultation with a board certified plastic surgeon.

The best way to determine if a chin implant would be beneficial in profile, oblique and frontal views is computer imaging. But by your description of your own profile view it does not appear that your chin looks deficient to you. The only thing known for certain at this point is that any form of a lift is not going to create more definition in the chin. 

 The photographs are inadequate in order to make a determination about being a candidate for a chin implant procedure. Please resubmit a full set of facial photographs from all angles in a chin neutral position looking straight ahead. Chin implants are manufactured in a large array of thicknesses, sizes, and shapes which is best determined at the time of the consultation and examination. In our practice  For over 25 years, we have used Implantech brand of solid silicone chin implants. They can be placed under local  anesthesia as an outpatient procedure.

You will need to provide up close photographs from three angles. One front, one profile and one 3/4 view in order to provide you with further expert opinion regarding chin augmentation. If you don't want to provide up close photos on this format then I would suggest that you seek some complimentary consultations with experts in the field and have imaging performed to show you the proposed changes chin augmentation would provide for you. Best regards, Michael V. Elam, M.D.

from the limited pictures, I don't think so.  To me you look lovely and I suspect you may have a case of the mirror disease... where staring at yourself in the mirror exaggerates what (you think) is bad about your face, which no one but you sees and ignores what is good about your face which is quite a lot. 
The trouble with focusing on the bad is that in trying to fix something that only you see, you might make something that everyone sees, and it's usually not for the better.