United Kingdom, Aug. 1 -- Sir Elton John has marked 35 years since he conquered his addiction issues by celebrating his "sobriety birthday".

The 78-year-old singer got clean back in 1990s after a long battle with substance abuse and he's now marked three and a half decades since he turned his life around with Elton sharing a picture of the cards and flowers he received from his loves ones on the big day.

In a post on Instagram, he wrote: "Grateful for all the love on my sobriety birthday."

Elton's image showed cards celebrating his "35th birthday" along with vases of flowers and what appeared to be hand drawn pictures from his two sons.

The Rocket Man musician took a year off work back in the 1990s to focus on his recovery and he worr...