You can try keeping your eyes open and staring at an object or a flame, there is no need to visualize as some people like you have trouble with it and it is a distraction.

If you don't like sitting you can either exercise and focus on your breath while doing it and zone out or do a form of yoga both will have the same effect as meditation.

But if in the future if you wish to achieve visualizations try while going to sleep.

Hope this helps.

Thanks.
Brett.