If it's not broke don't fix it.
I had to deal with the same situation, my father was trying to "tell" me how I should spend and save my money since I've gotten a job. I have never once listened to his bad advice and he would get very very angry about that and basically anytime I spent money he didn't deem appropriate I would get some long lecture on how I need to save, I waste all my money blah blah blah. This went on until one day I sat him down and basically explained to him, while I understand he is my father and I do appreciate him trying to look out for me I am not taking financial advice from someone with a credit score over 200 points lower then mine, that has less then 5% of the money I have saved in the bank that I do, and basically lives paycheck to paycheck because of frivolous spending habits. I Don't need new clothes if the ones I have fit and aren't ripped to shreds, I don't need a new pair of sneakers every year, I don't need a $1500 entertainment center when I'm home all off 5 hours out of the day and I have no real interest in 90% of whats on TV anyway. I went on to explain that he has indeed taught me a lot about money and the importance of saving but I have learned from his mistakes not the advice he is wrongly trying to give me. The fact that he see a new $500-$600 engine part in my garage or on my car when I see him doesn't mean I spent the first $500 on it. This as you probably can tell didn't go over very well at the time, but he got over it in a week and now stops giving me input on how I should or shouldn't spend my money.