My lack of motivation

I have been struggling to learn about something i love and would love to do one day...let me exsplain.

So in my career i build 3D models and renders and animations for architects. I can show you how your building is going to look before the first brick hits the ground.

Now this career and talents bring me close to another career or hobby depending on the person.

Game Design
My job has all the same elements in it as there would be in game making. I have Unreal engine and have played with it for a bit. I get to a certain place and then lose interest.

I realise its because there is no sense of achievement while i am making a scene. With my job once i build a scene and hit render. There is a sense of job well done when i deliver the final images.

With learning to make a game there isn't much of that feeling. Also im used to producing works of art with 3ds max and lumion. Now trying to learn a difficult program and still reaching that level of work....

This is not practical..i realise im aiming too high and want it too fast...so from now on i will be posting my progress with unreal engine. Slowly this time...
My first task should be like a house or just a runway with some jump obsticles....

Any gamers or creators please help and give me some suggestions.