I don't like the texture of my hair (Photo)

Unfortunately, you cannot transplant someone else's hair on your scalp or body. This would cause an immune reaction and the hair would be rejected and the condition of the scalp would not be pleasant. Further, hair transplants are for those experiencing hair loss, not for those wanting different hair. The only way to change the texture of your hair is to get a hair treatment done such as a keratin treatment, Brazilian blowout, or something similar. You may want to discuss texture and styling options with an experienced hair stylist. 

It is not possible to change the texture of your hair with surgery. You risk donor hair rejection and other complications if another person's hair follicle in used.

Unfortunately hair from another individual will be rejected by your body. To overcome this you would have to take strong medications that suppress your immune system, as with kidney or liver transplant patients. However, there are significant risks to having your immune system suppressed such as contracting serious infections or developing cancer. 

Like any other organ in your body, the antigenic make up is pretty specific to person.  When another's antigen is introduced into some one else, antibodies attack these foreign antigens and rejection of the organ occurs.  A similar response is seen in allergy patients to environmental antigens.  The only way to combat this response in organ transfer is to take anti rejection medications which can have severe complications, even death.  
Interesting, when someone's own hair from another part of their body is transplanted to their scalp, over time we see change in the texture that is more similar to scalp hair.

The short answer is no, unless they are genetically identical ie from an identical twin. Otherwise the hairs would cause an immune reaction and be rejected just like any other organ. Using immunosuppressive drugs for a non-life threatening condition would not be ethical. There are case reports of hair transplantation from one identical twin to another for indications such as post trauma scarring and post radiotherapy. Obviously if one identical twin develops genetic hair loss, the other is likely to unless they are successfully using hair loss prevention medication.

Hair follicles cannot be taken from one person and transplanted to another person, your body will reject the follicles from another person. 

Hair can only be transplanted from one part of your body to another, not from another person as it would be rejected like any organ transplant

The only hairs that can be used in a hair transplant are your own. The hairs are taken from the back of your scalp and moved to the area that is missing hair. So the texture of the transplanted hairs will be the same as where they were taken from. I think you have great hair though.