The best thing to be done now is to realise this fact and save any extra cash instead of spending unnecessarily. Instead of increasing your purchases because of your increased disposable income, it is better you increase your savings. Boost it as much as you can because you donot know gow the inflation rate would turn out in the next few months to come.
You made a very notable point sir, we might not realize this in that moment but you have and I am earning money right now and I am also spending more instead of investing, but I am spending to make some good moments, I beleive making some good moments and not worrying about the time while you have money in your pocket is not a bad idea even in the future we might regret it.
So many times, I had extra funds, I wanted to buy something, but I did not buy that, instead, I bought something in lower price that could also fulfill the desired work of the tool I was going to buy in high price. For example, buying an Android phone instead of IPhone etc.
Why, to save that money to buy another tool for my life or to help someone else, or to gift something to my family but it may sound selfish but I am not, but we must buy what we want and should not worry about the future that much.
But from an investment point of view, we must think.