The 27-year-old actress admitted she is slowly coming to terms with the death of Cory - who passed away from an accidental overdose of heroin and alcohol in July this year - and believes she is doing what is ''best for him'' by getting on with her life.
Although the brunette beauty is still in shock over Cory's passing she is learning to control her grief.
During an appearance on 'The Ellen DeGeneres Show', she said: ''I really feel like I'm still trying to figure out all of this. It's been only a few months, but my mum has experienced a lot of loss in her life and she told me at one point, there is an empowerment that comes with grief - at some point you find it. It's very hard but you will find it, and I think at a certain point you can choose to sort of fall from this or you can choose to rise. And that's what I'm just trying to do my best for him, because I know that that's what he would have wanted.''
She added that she hopes to ''make something positive for where I go in the rest of my life''.
The singer and actress also thanked her parents for their support following Cory's death as well as 'Glee' guest star Kate Hudson who offered Lea her home when she needed to escape and grieve in peace.
She said: ''It's certainly been a pretty rough year, but I've been surrounded by such great people, such great family ... Kate was so wonderful to basically give her home to myself and my family.
''It was so helpful to just basically have a safe place to process and just have a minute to just breathe before getting back to my house, which just has a lot of memories and stuff, so being some place else to just have a moment was really nice ... I'm just so thankful to her.''
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