Concentration

adjective capable of arousing and holding the attention

• The absorbing novel kept me captivated until the very last page.
• I couldn't put down the absorbing book - it was so good!
• That movie was totally absorbing, I was hooked from start to finish.
• The absorbing music filled the room and enveloped me in its melody.

verb to divert someone or something from its original course or purpose

adjective distracted or diverted from the main subject or course

• I got sidetracked by an interesting article while researching for my thesis.
• I got totally sidetracked by cute cat videos on the internet.
• I was supposed to finish my homework, but I got sidetracked by chatting with my friends.
• Don't get sidetracked by small obstacles on your path to success.