As an engineer, it’s very hard to talk about philosophical issues, mainly complex themes like this, but I’ll try! Follow me!
In ancient literature, the phrase is part of the longer “carpe diem, quam minimum credula postero“, which can be translated as “seize the day, put very little trust in tomorrow“. Modern life’s encouraged us to plan the future, even though we don’t know if we’ll be alive tomorrow. Everyone’s supposed to take control of life and to plan about, step by step, what’s next in the close future. On the other hand, I advise you to do the opposite: just carpe diem!
No, if you understood I’m asking you not to be responsible, I’m sorry, you’re wrong! The meaning of “carpe diem” is not to ignore the future, but rather not to trust that everything’s going to fall into place for you and taking action for the future today. Carpe diem message is a wake-up call to face life as something better than action-reaction attitudes! Not everything must be planned. Lots of stuff simply can be only what they are. If you want to enjoy some different food today, do it! It doesn’t matter if it’ll cost more than usual. Sometimes, to have fun is more important than to follow planned actions. It gets boring just thinking too much to take decisions all the time!
People say “life is beautiful”, but when you ask for practical examples, most of the time, they’re related to decisions made unexpectedly, not arranged ones! Why? Answer is obvious: when you’re in control of all decisions, you think you’re able to predict everything and, of course, you aren’t! So, when you let things happen, surprising feelings can be reached! Try it and I assure you won’t live to regret!