Hello. With me, I have not been able to stick with things. As a child, I know that I have limited interest, but I don't if this is because of my non-diagnosed AD/HD, ASD, or both. The ones I mainly remember are certain TV shows (Stargate for 2 years, NCIS for 2 years, now mental disorders). For me, I try to combine two interest like I started my writing interest during my Stargate interest, so I would write Stargate fanfiction. I also wanted to learn German during my NCIS years, along with fanfiction/writing, so I would try to read NCIS fanfiction that was written in German. Of course, I would do each interest separately, but doing them together made me more interested in each of them and wanted me to continue to do them. I really want to get into writing again because I want to finish a novel I was working on during my writing interest that went through one of my TV show times. This works for me but it might not work for you, but you can always try. Hope this helps .

*Note* I am not diagnosed with AD/HD, but it is very likely.