It's always good to have goals. This was actually the topic of the #tsql2sday in December. I wrote about mine here: https://www.mlakartechtalk.com/t-sql-tuesday-97-setting-learning-goals-for-2018/
There's a famous quote that goes something like "People often over-estimate what they can do in a year and under-estimate what they can do in 20 years". I like to keep this on my mind when planning for goals because it helps me think long term.