I sometimes think that there are some people who seem to like moaning that they never have enough money. If you look at everyone, there will always be something that they cannot afford, even the richest person in the world. Therefore we could all moan about not having enough money, if we felt like it.
The problem with concentrating on your lack of money is that it will make you feel like you are poor. It is much better to feel grateful for what you have got. There are bound to be people in the world who are worse off than you with regards to the amount of possessions they have or the opportunities they have and so think of them. Be grateful for what you have and think about positive ways that you can work towards earning enough to buy the things that you want.