I've found myself struggle to draw a straight lines, how ever I try it always becomes a slightly curved line.

I'm not sure if I'm not drawing from the shoulder or something that my brain is working differently.

I'm using my right hand, whenever I draw down a line without thinking, it tend to curve towards the left or upward.

I have tried thinking of curving the opposite side and moving my arm straight ghosting before I put down the line. it works sometimes, yet I still make curved lines most of the time. it gives me anxiety.

because of it, When I'm working on the 250 boxes challenge or any other exercises, all of my lines tend to be slightly curved.

It might not be a major issue for now , but I think if I don't fix it it will ruin many part of the work ahead of me.