Mountaineering requires experience and knowledge of the terrain and of its dangers, you must be physically fit and have training in the techniques.
The weather conditions at the moment of departure determine your choice of route: a mountaineer must adapt himself to the mountain.
You must always act intelligently, carefully and humbly regardless of the length and difficulty of your trek.
If you do not think you have the required skills, then make use of a professional guide. You will be in safe hands and your trek is much more likely to be a success.