I got a superficial friction burn 4 weeks ago it's 95% healed but still light pink. Will it heal completely? Depressed!

Most likely. Although there are no guarantees, the pigmentation will fade to normal. It could take weeks or even months. Scarring is possible although less likely.
Time. If you keep the area protected from sun exposure (either by covering or by using good sunscreen lotion), there is a good chance that it will heal completely.