If you have achieved success or one of your wishes have come true, celebrate. Of course it makes more sense for larger successes, for example to celebrate a party. But even with small successes you should reward yourself or appreciate them. Video games have mastered this perfectly, for example by giving a so-called achievement or a trophy for an achievement.
Tutorial on how to celebrate (examples): Listen to your favourite songs and dance. Do something you really like. Buy something nice for yourself.
It is more important than you might think, because this will motivate furtheron. Snowballeffect (Jim Rohn)