Coconut oil or olive oil. Yeah, I've been using that trick too since I was about 15 (that's 11 years total lol) and it's by far the BEST hair trick I've ever discovered. Just massage it into your scalp and through to the ends. Massaging the scalp will stimulate the circulation and your hair will grow out healthier. It'll also grow quicker if you want longer hair. Believe me, I've grown out my hair to my hips/waist TWICE in 10 years but I usually have a shoulder-length heavily-layered haircut. It took me just under 3 years to grow my hair to my hips the first time.
You could also try a new haircut that's easy to maintain and fits with your lifestyle. Try a more choppy layered cut/shorter length or get a fringe (angled fringes are the easiest to blend into a haircut or grow out + they always look on-trend. Make sure you take your face shape into account when choosing a suitable fringe). Look for pics and show your hairdresser. Hair salons also keep folders full of hairstyle pics that you can choose from.
Finally, you could dye the tips of your hair if it's relatively healthy. Ombre hair has been 'in' for ages now. Google for pics. That way it's not a drastic change as you're not dyeing all the way to the roots. Or try subtle highlights/lowlights to make the most of your natural hair colour. Oh, and large-barrel curling irons are great for creating pretty, soft waves/loose curls. I have two Babyliss curling irons - one smaller barrel for when my hair is short and one I use whenever. Best of luck.x