If you just want to stay in decent shape and be healthy it's not really that hard. Let me summarize it:
1. Don't eat processed food !!!!
2. Limit your portions to the size of a medium plate(don't stack it though)
3. Eat your green vegetables.
No need to count calories either, just split your plate in 3 roughly evenly sized slices:
1st should be protein(chicken breast, fish, eggs, low fat mozzarella or cottage cheese for example)
2nd should be starchy carbs(pasta, rice or potatoes for example)
3rd should be fibrous carbs(broccoli, spinach or bell peppers for example)
and lastly you can add a little healthy fats like a fist full of nuts, a slice of avocado or a few table spoons of olive oil(men need this healthy fat for testosterone production).
And you can play around with this like increasing the ratio of the starchy carb slice for breakfast/lunch for more energy during your evening workout and increase the ratio of the protein slice for dinner for better muscle recovery after your workout.