I agree with Jennifer that minimal/barefoot running is not for everyone. If one is going to try and change their running form, they need to know the why and how. And as she has stated, there are a lot of considerations - hips, thighs, knees, ankles, etc. However, minimal/barefoot running will cause a shorter stride and a foot strike - the impact of heel striking is just too traumatic. Do a lot of minimal running, you will foot strike more when hiking, especial on steep hills (up or down), although normal walking is usually a heel strike, even for the minimalist runner. The reason minimal runners can/will foot strike on hills is because their muscles, especially calves are conditioned/built up to do this. For most hikers it is quickly too tiring. All of this is just personal experience and observation. I have no professional experience or training.
She also made a statement about cadence, I think in another post. Cadence is the number of strides per minute. Increase your cadence and your stride will shorten and your foot strike will move forward. Decades ago common wisdom was a cadence of 180 strides per minute was optimal for elite distance runners. Bill Bowerman, Oregon coach and Nike founder, thought lengthening the stride at this cadence would enhance performance. All it did was cause injuries to a generation of runners due to heel striking, in spite of his over-engineered shoes.
Running form is a skill, as Ike pointed. The best example is America's Galen Rupp. Alberto Salazzar has been training him since high school. Over the past 13 years he has been pretty much injury free due to a fast cadence; greater than 190 strides per minute and a foot strike. But as Jennifer pointed out, running is a habit and it takes a lot to change your form and you need to understand why and what you are changing. The older you are, the more difficult it is.
Another poster mentioned only getting out once every few weeks. This can be a recipe for injury. Need to get out several times per week for long walks, runs, or hikes. Have to keep our hips, thighs, knees, ankles, feet and related connecting components in shape. This why I have never had a serious injury in 50+ years of running/hiking. Of course good genes helps with this.