actually if you are aimless and know that, it is a good sign.
You are doing the first step towards self discovery.
there are many people who are aimless and they themselves dont
even know it until they retire, or is told they have a terminal
illness.
the best thing you can do is to explore your options and tell
yourself to remain positive in life. sounds easier said than done
but by being positive you can see clearer.
talk to a older/ more mature friend and learn from their
insights, or try to do something good for your soul (like
volunteer) to see where that leads you. if you are Christian, then
turn to God for some directions.
Some of the most destructive way to deal with
aimlessness includes: bad habits - smoking/drinking, dangerous
sexual habits (people must learn to at least use a condom or
better, do it with a tenga),
or become depressed or suicidal.
Learn to appreciate life and all that life has to offer.
Wishing you all the best in your search for meaning in life.