Glyphs from my own icons

Check out FontSelf at https://www.fontself.com/

It works with Illustrator and Photoshop; it's inexpensive ($39 US for AI, $59 or both); it's relatively easy to use; and can create your own font. Then use a character style (possibly automatec with GREP styles) in InDesign.

How can I craeate text out of my own icons?

By @hendy_5450

Why do they've to be as glyphs? 

What are you trying to achieve - what is your end goal? 

It's not possible natively from InDesign but you can either:

• use a dedicated software to create a font (maybe expensive and diffficult to use)
• or use the IndyFont plugin, created by Marc Autret. 
  https://indiscripts.com/category/projects/IndyFont