Singer Whitney Houston was feeling the pressure of a possible comeback in her final days, reports People.com.
"Her voice was ruined, and her comeback wasn't what it was supposed to be, because her voice wasn't what it used to be," a close pal of Houston's told People, adding, Whitney "was in pain from all the pressure she was facing."
The Grammy winner and actress, 48, was set to make her return to the big screen in the film "Sparkle," co-starring Jordin Sparks, and due in theatres in August.
As the source continued, "In the music industry, you're only as good as your last hit, even if you are Whitney Houston. Then she had people gossiping about her... It was a lot to deal with."