Did you even read the line before that?
"I worked my whole life just to get high, just to be like: 'look at me I'm never coming down'" Meaning she worked hard to get to the top. In the past tense, not the present.
And then she says "I worked my whole life just to get high, just to realise: Everything I need is on the ground"
Meaning that after she had achieved that top spot in the previous line, she is hit with realisation and realises that what she needs is on the ground.
Stop twisting lyrics without understanding the context behind them.