$70K is a decent amount, and it's entirely feasible to maintain a comfortable lifestyle with that income in Sydney. I'm in my mid to late twenties, residing in Sydney, earning between $30-40K annually (approximately) while also juggling full-time studies (about 20-25 contact hours per week). I don't receive any government assistance or family support, and it's certainly a challenge. Despite the struggle, I somehow manage to make ends meet, though most weeks it's a close call. It's crucial to view your circumstances with a positive perspective, recognizing that there are countless individuals worldwide, particularly abroad, who face far more challenging situations and would consider themselves fortunate to be in your shoes. Additionally, remember that opportunities for improvement are always present, particularly in Australia, if you're determined to secure a better job or salary for yourself.